While I liked the vibe of the boutique more, I am thinking the larger companies would offer more transaction volume and bigger group of networking opportunities.

The process if different that regular transactions and experience is needed to ensure the transaction goes smoothly 

http://www.speeedyhousebuyers.comThey are a reputable wholesaler here in OKC and in the top 3 overall on transactions.

Your lender, also your partner in this transaction will also provide guidance of what they require.

Couple of key points that really separate the 203k from other products include: - ability to finance up to 6 months of mortgage payments while the renovation is being completed if the whole is listed as uninhabitable by the HUD consultant. 

i.e. using your end buyers funds to close your purchase transaction?

He also mentioned that the boyfriend of one of the sellers now wants the house and they've discussed putting a tenant into the vacant unit so it sounds like they're trying to delay the transaction so the contract will run out.   

Double closings are where the end buyer authorizes you to use their funds to close on your precedent transaction (i.e. the house they want to buy that you haven't bought yet).

It’s never stopped a transaction but it’s a definite headache and head-scratcher not knowing when these arbitrary guidelines apply.  

You want to get in at a good price and develop a great product through your rehab.