Na it's not stupid @
StoyMilk; the wider you cast the net the more fish you catch.
Life is all about experience, if you wanna take everything you can from it then you have to DO everything you can during it. Do the shit you enjoy - whatever number of things that may be - cause ultimately you're a long time dead. If some success comes of it then fucking great, if not then at least you tried. I personally do a shit load of things similar to yourself; musician, author, often draw or paint, tutor and study. The way I see it is focussing EVERYTHING you have on one thing will ultimately burn you out; you risk getting bored of it or it taking over your entire life.
Cast the net as wide as you can.