Ive thought about this myself the last year (boxing background & now a blue belt BJJ at 30years old.
I think there are alot of things I'd be asking myself & you have to be really honest with yourself, what do I want to achieve in MMA, is it really possible, are my striking skill already good enough to be competitive at the level I want to fight at (because your groung game will be lacking).
It is possible I just think your success will vary depending on your current skills & you need to have a realistic view of how you will do & what you expect to achieve.
That's how. Came to my conclusion.