@landoq
I like your thinking, I truly do, theres some fine projects that are looking for coders, this might be a better start before jumping into your own game although I do wish you the very best in this endevor.
I would look at
Game Design being your first port of call.
I love the idea of an atic-attack remake / clone with the power of the miggy one could make this a very good game indeed =D
unless you have been blessed by god, RPG's are very hard to make and conceptualize as an entity sure, but as a whole gaming environment no, you need stories, sub-stories and a good game mechanic as well.
I am not saying its impossible, I am just saying RPG development is more TEAM orientated than one or two people.
Artists, these are the people that make a concept work by commuinicating it to the user/player, either in music or graphical mediums, this requres a lot of time on thier part, and can (and often will be) a lynch pin in games development.