If you would come by and read this, In my opinion Unity is a great tool, if you want to make rpg's and then some more and bigger stuff, i suggest you to start with Unity. Start with more complicated soft from the beginning, that will give you a lot of cool tools and a lot of exp. Maybe you won't need a good chank of it for an rpg, but you'll become familiar with the it's ui, and it'll help you with later projects. If you want to make only rpg's (which is cool too!) RPG Maker is a nifty nice program for your goals!