You are nearly there
A better set of tyres would just about get you there, so think A050's or whatever the good Hankooks are (z221 or something)
Have a look at ssxricho's build, he does 1.05s around wakie.
If you look at the arias AP331154A RB25 pistons with a 12.5cc dome, you get 9.1:1
Note Arias call these an 8.1:1 comp piston, but check the comp height, these will likely sit 0.005" further down the bore
9.9ish:1 using a 1.0mm gasket and 0.8mm out the bore
edit, given that the piston is 0.74mm out of the bore, it works out at 9.84:1 with a 1.0mm gasket
1.3mm gasket is 9.53:1