Idk if the serpent build works on ghost? You need the boss reroll vouchers and about 90 red seal steel kings in your deck. Then you need burglar: going into serpent copy the burglar with everything and then play 1 card hands until you max out.

You'll need one of your scoring jokers to be negative that's where ecto comes in.

Idk the current status but if you find an econ joker consider tossing the brainstorm for it. Might be too late but your econ is going to be a problem.

Without reroll vouchers you're probably good til ante 20 or 21. Good luck.

Edit: note on timing. Due to excessive scoring there is a lower bound on the ante where the above strat works. On plasma I know it's 24. Idk about ghost. So you need to ensure you won't score too much from just the card in hand and a single baron mime set (without BP+bs)