These include:ZipRealtyRedfinRealtor.comZillowTruliaAs for non-public deals, you can try foreclosure sites like RealtyTrac or your local foreclosure auctions, bandit signs, yellow letters, commercial brokers, lawyers, accountants, estate managers, etc.

And one thing I think about a lot is if I should talk to a lawyer at all. 

., a married man, as his sole and separate property" is your new vesting.Get tight with a divorce and estate lawyer to figure out if you care about the "sole and separate property" part, and if so how much you care.

Have already sent a 10-day pay or quit notice but getting mixed responses from lawyers about evictions on hold/PA now requiring 30-day notice etc. 

I STRONGLY advise you to talk to a lawyer or sheriff or maybe someone down at town hall because some cities and towns have strict requirements that go even further than the state law.

(note: I am not asking for ways to skirt this restriction, rather I am trying to understand my options)3) Should I contact a lawyer before this deal closes?

Lawyer was provided my the Broker and the Wholesalers as well as everything else.

If no payment then call the lawyer and evict.

Talk to a real estate lawyer and see how you can get rid of him legally.

I think the forums will be great to increase your knowledge on all the topics but you should talk w a lawyer.