There are lots of very good blinders who are pretty bad at regular 3x3. If you want to go for 3BLD, by all means go for it.
If you already know some PLLs (specifically T perm, Y perm, and R perm) I suggest you learn Old Pochmann (Jperm has pretty good videos)
If you do not know these algorithms, it might be easier to learn M2 for edges and OP for corners. (You can also use Jperm to learn these)