Is my plan feasible?

[Ponks]

First off, I'd like to say that I don't know too much about stocks.

Alright, I'm 20 years old now and looking to invest. I've got about 40k saved up right now to start investing. I'd like to invest in something med-high risk (Is a 10% return possible doing this?). I predict over the next 2.5 years (till I graduate college) to make about 250k-300 from poker. This is with taxes and expenses taken out. I'd like to have something I could keep putting in money every month (maybe 8k-10) or every few months. So when I graduate college hopefully I'll have somewhere between 350k-400 invested. I'd continue to play poker a few more years and keep on investing it in the same thing. Hopefully by the time I'm 30 I'll be able to have over 750k invested with a house and a car and whatnot. Is it possible then to just keep this 750k invested and just live off the return? I don't think I would retire, but could I if I wanted to?

I was thinking about putting it in mutual funds. My friend told me this could get 10% over the long run. What's my best bet here? I also plan to do the Roth IRA thing as well. Assuming I can make the money in poker (don't worry I'm still getting my degree too), is my plan risky at all? Is this possible? It really seems too good to be true.

Thanks
Ponks