How much smaller could I go without complicating things and will the cc come back?

You might want to consider going down to 225 cc's and asking to be placed on Accolate prior and after surgery.

Dear Luminous,
I must not second guess your plastic surgeon as we all have different techniques to most surgeries. I can only tell you the options I would suggest to a patient with your history.
Number one, yes, I always replace the implants when a CC is present...there may be a Biofilm which causes another re-occurrence.
Two, I prefer submuscular as there is a lower incidence of capsular contracture.
Three, a total capsulectomy is paramount.
Four, consider using an ADM (Acellular Dermal Matrix...ADM) in patients with recurrent CC
Five, Intraoperative antibiotics and irrigation and post operative oral antibiotics (not really indicated but I still use them).
The use of textured implants is physician preference. The size is up to you...if too large, drop by a minimum of 50cc's.
Best wishes,
Dr. Taranow