Silverspawn, you said you wanted to try to find my last solution on your own, but it has been around a week, and the new puzzle is about to be posted. Feel free to ignore this and still work on it on your own if you'd like, and I can confirm or deny if your solution in the same. For anyone else who is curious, this is the alternate solution I have:
Discard any 3 cards that are not Worker's Village and Vault, +$3.
Play Worker's Village and then play Vault to draw those three cards.
Discard all cards except Watchtower, +$6.
Play Watchtower, draw 6 cards.
Play Forge on Goons and Mint to gain a Colony.
Play King's Court on Bishop (Trashes Contraband, +$1 + 3VP, trashes nothing +$1 + 1VP, trashes nothing +$1 +1VP).
You have 5 buys and $12, buy one Colony.
Game ends because Colonies are out.
You start with 52VP and gained 25 this turn (20 from Colonies, 5 from Bishop).
Final score 77 to 76, you win.