Spac;74032 wrote205s are a good match for 7" wide rims.
Anything much wider will almost certainly have LESS grip, as the tyre's carcass is misshapen to squeeze onto the relatively narrow rim.
215s will be fine if they fit, although I'm not a fan of the way they look on 7" rims. 225s get into 1980s bogan territory, and make my stomach churn...
Agreed, as above. No chance I'd fit a 225 to a 7" wide wheel.
205/50/16 would be what I'd be fitting to it.
ET35 will require a spacer, your virgos are ET20, so these will put you a further 15mm in per side and therefore narrow the track by 30mm.
I'd probably go for a 25mm spacer all round, giving you a net offset of ET10.