I think advancing past 5 degrees isn't gonna help you any. I don't think you'll do damage with full advance, but it won't run good. I would just try two or three degrees of advance. You need another cam gear though,, too bad about that VCT crap.
98.5 SVT
91 Escort GT (almost sold)
96 ATX Zetec (i brake to watch you swerve)
FS: SVT rear sway bar
WTB: Very cheap beater
CEG Dragon Run - October 13-15