45, Revision with Alloderm - Sientra High profile 545cc - San Diego, CA

Had my first BA in 2005 after breast feeding two kids, was a 34C prior to kids and like many, my breasts totally changed after breast feeding. Goal of first BA was simply to get back what I had. Went for the natural look and did mentor moderate profile saline implants filled to 390cc. I'm 5'9, weigh 115, athletic small frame. I should wear a 32D, but hate tight bands so I'm more comfortable in a 34D bra.

Absolutely loved my boobs, over time with a few complications, find myself with rippling, bottoming out and need of a revision. I'm very active and love that high, full, round look so will go bigger this time to find that perfect balance. Not bothered by "fake look", it's my body ;) I am traveling to San Diego to have Dr. Pousti perform my revision with Alloderm. All the research and comments out there about Dr. Pousti and his staff are so true. Absolutely loved him and the staff, very patient, informative, and truly listen!! I drove out for the consult and they called me enroute to make sure I was okay, offer directional help, offered to alter my appointment time based upon my drive out - WOW, such a feeling of caring. Still finalizing size, thinking 650/700cc silicone and getting excited but nervous for the recovery and staying still....

I'm wondering about the size of the implant and the gym and cross fit and carrying the weight of a larger implant (650-800). I already wear two sports bras at the gym. I am also getting Alloderm to keep them secure but worried that they'll be heavy for really physical activity. I don't want these girls moving! Below are some of my wish pics...Am I being greedy and unrealistic by wanting everything ...freedom to run and jet ski like a maniac with this size and the high round fullness of larger implants?

I feel like I'm pregnant and in that nesting phase....can't seem to shut my mind off at night thinking about the recovery process and what I will need. Since I am having the internal Alloderm to provide support to my breast pocket, I will need to keep my arms at my sides for four weeks. Anyone out there go through this or internal bra procedure with any words of advice?
Been with my hubby for 20 years but the thought of him washing and drying my hair is hilarious, let alone shaving my legs....