would it be best to lose weight first by doing arobics & then start lifting weights. So I can tell how big my musals are getting?

or is it best to start doing both from the start?


I want to lose alot of size.
currently in a 13-14--- XL
My goal is a size 7-8 -- M to S

I want to be firm. but DON'T want to gain size.

specially in my inner thighs or calfs


Which is the best way??????????