AFAIK, you have to be registered (pass the 7 and be subject to an SRO's jurisdiction) in order to trade other people's money, which is what you are doing at a pro firm.
For retail daytrading, the 25K rule is the SEC's. You're unlikely to find a brokerage firm that will violate it, at least not for very long.
If you want to avoid the 7 and the 25K minimum, learn to trade options, futures, or wait for single-stock futures.
