The question boils down to: am I a singer who can play a little or an instrumentalist who sings a little. There are only a few who do both well, the rest of us have to decide. I decided a while back I wanted to be a singer, so I keep the instrument part as simple as I can make it. I've never regreted that. I and most peole prefer simplicity done well to complexity done badly. The easiest thing to spot on any stage is the performer who is reaching for something over their head.