How much muscle???????

I am going to be losing weight this summer and maybe adding some muscle. Right now I have a good amount of muscle just a little fat over the top of it so if i lost the weight I would probably have a six pack and defined arms, but they wouldn't be large and I would be more lean. Think LL cool J(lots of muscle), ryan reynolds/mark wahllberg(not as much muscle as LL cool J), thin like russell brand, or somewhere in between any of these thanks