If this is your goal be prepared for some harsh critique. You know, there's always something to be found. Never forget that critique is always mend to be constructive around here. With your ambitious goal people will start pointing at every little imperfection.
I have some personal thoughts on that matter... I was very ambitious when I was into painting a few years ago. This was one part that killed the fun in it for me. I was not able to mentally step back from my too high goals. Then I got frustrated and looked into gaming miniatures but never found a real group to play. Also, it would take me days to get a gaming mini done. That was another reason to leave my brushes alone. I simply felt I wouldn't ever be able to reach my goals. I never lost the hobby completely out of sight. Always peeked at GWs display armies when I came along a store and sometimes visited my old forums to take a look at the galleries. When it hit me again I started completely different. My goal now is to complete minis in a timely manner to a standard I am happy with, knowing there is always stuff that can be done better. In the last few weeks I improved my painting way more than in all the time trying to figure out the best techniques before I left the hobby. Most important - I painted way more miniatures in a few weeks than in all the time before. The Zombies are dipped, but still looking absolutely gorgeous for being played with. So why should I care. There it is, the joy of painting.
So if you ever encounter that kind of frustration along the way, I know exactly what you are going through. I feel you have way more talent than I do and you probably have a stronger ambition than I do. You can reach your goal, maybe in a year, maybe in five, who cares? Just be able to take a step back and do some fun stuff, ignoring your ambition from time to time. And feel free to talk to me about it. I'll hear you. There are ways to force fun stuff, like little fun challenges and stuff like exchanges to cheer you up and distract from the main projects.
Please, DO NOT GET LOST along the way.
Edit: I am sure people like Arch, Tero, Digga and all the other nice fellows will be there as well.