470cc Mod profile or 540cc High profile, which is best for my body type? (Photo)

In a situation like yours, with one breast that is larger and a need for a lift on one side only, it can be very helpful for your surgeon to use sizer implants during surgery to test which implants will work best for you and give you the best symmetry. It's truly impossible for you as the patient to pick a size in advance, especially with your asymmetry, which is why you're agonizing over the decision. If your surgeon understands what look you're seeking, he or she should be able to determine the best combination of implants to use (either with the same volume on each side or slightly different), when combined with a right breast lift, at the time of surgery. That's the best way to maximize the chances that you're happy after one surgery only, without a need for revision. 

 Thank you for the question and picture.  You will find that online consultants will not be able to help you with specific enough advice to be truly helpful. Generally speaking, the best online advice I can give to ladies who are considering breast augmentation/lifting 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. I have found that the use of words such as  “natural” or "C or D cup” or "proportionate” 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, may be very helpful during the communication process.
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).  Viewing the patient's chest wall in the upright and supine positions, with temporary sizes in place, help select  the best breast implant size/profile for the specific patient.
I hope this, and the attached link (dedicated to breast augmentation surgery/lifting concerns), helps. Best wishes with your upcoming surgery.