Help !

In previous mails, I discussed the "De Bouver gambit" in the Vienna defense, occuring after the aggressive 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 Bf5 5.g4 Bg6 6.g5 Nd5 7.Nxe4 Nc6 8.c4 Nb4 9.a3. However, black also has the less ambituous, but equally effective 7...e6, after which the standard reply is 8.h4.

Black's options now inlcude both 8...Nc6, 8...Nd7, 8...Bxe4 and 8...Be7

a/ 8...Nd7 9.h5
...a1/ 9...Bxe4 10.fxe4 Bb4+ 11.Kf2 (+=)
...a2/ 9...Bf5 10.Ne2 (=)

b/ 8...Nc6 9.h5
...b1/ 9...Bxe4 10.fxe4 (=)
...b2/ 9...Bb4+ 10.Kf2 (=)
...b3/ 9...Bf5 10.Bb5 (=+)

c/ 8...Bxe4 9.fxe4
...c1/ 9...Bb4+ 10.c3 Nxc3 11.bxc3 Bxc3+ 12.Bd2 Bxa1 13.Qxa1 (=)
...c2/ 9...Nb6 10.Be3 (+=)
...c3/ 9...Ne7 10.Be3 (+=)
...c4/ 9...Ne7 10.c3 (+=)

d/ 8...Be7 9.???

Now it seems to me that 9.h5 is insufficient after 9...Bf5. Probably 10.Bb5 is best, but black is still on top.

So, please help, what do you suggest after 7...e6, as it seems 8.h4 does not equalize.