Kingdom is Tactician, Bank, Crown, Gladiator, Capital, Bank, Travelling Fair. Play Tact previous turn, then play Capital->Crown->Crown(x2)->Crown(x2)->Crown(x2)->Capital(x2)->Bank(x2)->Bank(x2)->Bank(x2)->Fortune.

This gives +4 buys, (+6+12+14+16+18)*2=132 coins. Buy 66 Travelling fairs, so +70 buys, +1 from tact, +1 initial, so 72 buys

X=72 Y=73 (probably Y is higher, but if it is, I don't win anway.)