You have meowth (or Persian) with payday in a double battle. You attack your ally with payday(and have a physical wall) and do this until you have enough money. Also give meowth a luck incense/amulet coin
Yeah, but keep in mind that Meowth and Persian don't have the best defenses, so you can't do this for very long. But sure, try it out and see how it works.
Source: Experience