Is 9.7:1 compression on iron heads too much for 91 octane

making an open chamber head work
1 race gas or alky or propane--alky/ water injection
2 keep the revs above max torque
3 weld up the chambers
4 mill the open chamber flat
5 use quench dome pistons
6 use wedge head
& use dish piston to get combustion chamber under the plug
& get ignition curve right