[–] hwong 0 points 1 points (+1|-0) ago 

Hey there. Sounds like you are on the right path. I think mobile will surely take over the desktop arena. So I would focus a bit on mobile, but frankly the medium is so new there are no guarantees yet.

At this point I would worry less about mobile vers desktop and just get to working in VR. There is lots to learn and lots to discover yet. There are no locked in workflows yet. the tools are changing weekly, the delivery is changing monthly. New ideas are popping up and then floundering to be replaced with newer ideas. Unity is good tool as you can downscale to mobile from a full featured.

and your doing it right. those that jump on board now will be industry leaders in 18 months regardless of platform. The concepts and ideas you generate now, will be come best practices for those in the future. Welcome to the bleeding edge! ;-) program.