The one thing you DONT want to do, is invest your money in a speculative TLD or IDN, especially when you just left the starting gate, stick with .com, .net, & .org's for now, then when your better established, you can venture off into other TLD's.
I would focus on buying some revenue generating domains to keep you a float, the money you earn from parking will allow you to buy more domains and build your portfolio......Good luck!
