Help trying to invent a tactical chess opening I need help!

I am trying to invent something out of my own imagination. But something isn't right... I am playing as white and I can't figure out why is it that I have the feeling about losing a pawn on c3?

[FEN ""]

1. Nf3 Nf6
2. g3 g6
3. Bg2 Bg7
4. O-O O-O
5. c3 Nc6
6. b3 d5
7. d4 Bf5
8. Be3 Ne4
9. Nh4 Qd7


Any suggestions and opinions will be much appreciated.
The Be3 would make more sense on b2 since that would not only support c3 and d4, but also make room for opening the centre via e4 later (after Rf1-e1). Placing a bishop on the 3rd rank in the centre with the pawn behind still on the 2nd rank tends to become awkward.