Trying to decide if I go 350 or 375 high profile and my surgery is this week! (photos)

Lots of factors shade the decision to go a little smaller of a little larger.  Younger women typically should lean toward the higher range, older women should lean lower.  Petit women should lean lower, tall women lean higher.Athletic women should lean lower so their breasts don't get in the way of activities.  Attention should be paid to the base width of the breast, the implant base width needs to be similar, or the breasts will look unnatural.  Your target photos suggest you want very full breasts, and my intuition tells me you will be fine with 375, but all these factors above should be discussed with your plastic surgeon.  Good luck! 

Thank you for the question. Online consultants will not be able to provide you with specific enough advice to be truly helpful.  One question that might be helpful for you to consider: would you be more disappointed if your breasts end up slightly "too big" or slightly "too small"Keep in mind, that breast augmentation surgery alone will not necessarily change the size or "puffiness" of the areola, if these factors are of concern to you.
My best advice: more communication.
It is definitely worth spending more time (prior to the date of surgery) with your plastic surgeon to discuss further.  As you know, it will be important for many reasons, that you feel comfortable that you and your plastic surgeon are on the "same page" prior to proceeding.
Ultimately, careful selection of plastic surgeon and careful communication of your goals (in my practice I prefer the use of goal pictures, direct examination/communication in front of a full-length mirror, in bra sizers, and computer imaging) as well as careful measurements (dimensional planning) will be critical.
 Generally speaking, the best online advice I can give to ladies who are considering breast augmentation surgery ( regarding breast implant size/profile selection) is:
1. Concentrate on choosing your plastic surgeon carefully. Concentrate on appropriate training, certification, and the ability of the plastic surgeon to achieve the results you are looking for. Ask to see lots of examples of his/her work.
2. Have a full discussion and communication regarding your desired goals with your plastic surgeon. This communication will be critical in determining breast implant size/type/profile will most likely help achieve your goals. 
In my practice, the use of photographs of “goal” pictures (and breasts that are too big or too small) is very helpful. For example, I have found that the use of words such as “natural look” or "C or D cup” etc means different things to different people and therefore prove unhelpful.
Also, as you know, cup size varies depending on him who makes the bra; therefore, discussing desired cup size may also be inaccurate. Again, the use of computer imaging has been very helpful during the communication process, in our practice.
3. Once you feel you have communicated your goals clearly, allow your plastic surgeon to use his/her years of experience/judgment to choose the breast implant size/profile that will best meet your goals. Again, in my practice, this decision is usually made during surgery, after the use of temporary intraoperative sizers.
I hope this helps. Best wishes for an outcome that you will be very pleased with.