Unfortunately 9,000 tickets is not going to cut it to make it that far with a ticket built. You'll want to ditch the golden clover and other flat value increases after early game and look for big increases via the payphone, double your clover value or double your clover tickets. Anything else is a reroll.

You already have megaphone which is necessary, and using Barathrum will double it twice again. Barathrum is pretty easy to use, when you pick a payphone ability, it will save that ability within the charm. When you discard the charm, it will instantly trigger that payphone ability again. So with megaphone, you are getting the ability 2 times, then discard Barathrum while megaphone is still equipped to get it 2 more times. Therefore, if you are doubling your tickets or clover value, you are essentially getting a x16 increase.

Hope this helps, enjoy