Concerned about scarring in front of sideburn, but I don't want to have my sideburn pulled back either. Lower Facelift Advice?

It is in my opinion the rare patient that would look their best with only a lower facelift, and the additional incisions between a neck-only facelift and a facelift are minimal. In many cases, there is more gathering and artifact (unnatural appearance) from a neck-only procedure.
Why would there be a more pulled appearance from less surgery?
When only a lower facelift is done, there is little restructuring of the deep tissues of the cheeks, and little chance to elevate and preserve the volume of the face.
The hairline is critical to preserve, in my opinion. Surgeons differ on this philosophy. Many surgeons raise the temporal sideburn hair to well above the ear during surgery, in order to reduce wrinkles maximally. We believe this creates a prematurely old appearance and therefore preserve the sideburn. If the sideburn has been diminished or lost in previous facelift surgery, it is usually possible to reconstruct it either with a flap of hair bearing skin or with revision facelift techniques that restore hairlines.
When you are looking at before-after pictures of facelift patients, if these factors are important to you, you will look specifically for the earlobe and hairline appearance before and after. If you see a lot of large earrings on the postoperative patients, hair combed down to conceal incisions, or if you don't see normal appearing hair patterns, beware. Also look closely at the ears before and after. Another clud to natural surgery is to take a step back and look at the overall patient before and after. Do they look natural or excessively pulled?
Ironically, it is often the most pulled appearing patients who had the least invasive lifts, just that their lifts were closed under great tension.
With modern deep layer restructuring techniques, it is not necessary to pull as hard as it was in the past. There are articles in our top surgical journals of how to pull maximally in order to defeat the nasolabial folds. Nowadays, most patients in our practice prefer not to look pulled, regarding that look as artificial. Rather, patients with to appear younger through volume redistribution and replacement, with techniques that pull more as an after thought, yielding a more natural, less pulled appearance.
When you reach the right office, you will likely feel at home with the doctor, their surgical philosophy, and their staff.

Your concerns are valid.  If you make the incision under the sideburn, it keeps the sideburn and hairline exactly the same; however, an incision in the scalp instead can hide the incision much better but can bring up the sideburn.  I would say that in good hands, the incision under the sideburn heals really well and the amount the sideburn is pulled up in the other scenario is minimal.  Without looking at you, it's hard to advise.  I think the bigger question is how much excess skin do you have?  If you're in your late 40s to early 50's, then either incision would work well.  If you have quite of bit of extra skin, I would have the incision in the scalp (the more skin you have, the longer the incision has to be which is why we recommend doing it earlier).  To your second point, almost every patient who needs skin removed, also needs volume because that's how most of us age.  Fat transfer at the time of facelift is a good idea; alternatively, do your facelift then add filler.  It's hard to answer the blepharoplasty question without actually seeing your pictures. 

A person’s age is best guessed by the appearance of their face. If you feel that your face does not reflect how young you feel inside, you may be a candidate for a facelift. Patients who desire facial rejuvenation that is affordable, quick, and effective should consider the Lite-lift™. Like the Life-Style™ facelift, this is a modified facelift that can be performed in the office with a local anesthetic and improve signs of aging around the neck, jawbone and lower face. These procedures are not "Thread-lifts" or "String-lifts". We do not use the "barbed" sutures employed in these other lifting operations. The Lite-lift™ uses longer lasting techniques that are discussed below. Because the incisions are limited, there is less bruising, swelling and healing time for most patients. Many patients can be back to work in one to two weeks looking rested and more youthful. During your #consultation, your skin texture and elasticity, as well as your underlying skin structure and your facial bone structure will be evaluated. Based on this evaluation, your board certified plastic surgeons will create a custom surgical plan, detailing specific techniques and recommendations to meet your goals. In doing so, he or she should be sure to have a full understanding of what results you expect. If you are not a #candidate, your surgeon can make other suggestions to address your concerns and objectives.