I'll play the "safe" move 6...d5

I'd better get start thinking about my next move now.

exf6(wait for it) dxc4 and we have reached the complicated Max Lange attack. 

I don't think there is an alternative to 7.exf6. Any suggestions?

Current Position:

+1.68

I would take e.p. and then Re1+ or dxc7 either way, getting something for it

What about retreating the bishop? 

7...dxc4

Important move. 

8.Re1 or 8.fxg7 ?

I dont like Re1

Bh6 is wrong in both variations you gave. Bg5 is better.

I dont understand why. Bg5 doesnt do much, Bh6 defends the pawn

 Bg5 is trying to trade the g7 pawn with the d4 pawn, and is a good-sharp weapon against an unprepared opponent (not a factor here).

If 8.fxg7 Rg8 9.Bg5 f6 you simply play 10.Bh6! and black's king is open.

If 8.fxg7 Rg8 9.Bg5 Be7 than you play 10.Re1 and the threat is to play Bxe7 followed by Qxd4

which is unstoppable. (10...Bg4 11.Bxe7 Nxe7 12.Re4! Bxf3 13.Qxf3 Rxg7 14.Qf6!)

Here is a board with the variations to understand easier.

I play 8.fxg7

8...Rg8 is forced of course.

I think white should play 9.Bg5, other suggestions?

i still prefer Bh6

I like Re1 followed by Bg5

Yes Re1+ looks just as good if not better.