I found when I was fighting (only amateur) that being larger in terms of muscle mass isn't the greatest thing, what I mean is becoming to bulky for your frame starts to make it hard to be as agile... At least for me this is what happened. Maybe I didn't condition enough or something.
I will say all the best fighters I have watched in person have been a balance of big, strong, fast, agile, nimble, etc... I certainly feel like there can become a point where muscle can get in the way.
It all depends on what weight class you will be fighting in too of course, but I strongly suggest if you plan to fight at all you rethink the idea of trying to gain a ton of mass and focus more on conditioning and skill over size.
Like I said I only fought amateur though so ultimately so what ya want, I did it for more of a hobby when I was in the army as fighting on the fort hood combatives team would earn me a few extra days off work here and there lol.
