IBKR is my other one, and my "main" for any active trading.

its unfortunately not going to be as easy as googling, but that might get you a list to start with and refine.  

Flat Fee MLS Brokers for sellers have been around for a long time, but Flat Fee Broker/Agents for buyers with a cash credit/rebate of the buyer agent commission are quite new and just starting to get some market share.

If youre saying condos are trading at $220 a square foot....Id be planning on a value of $110 per square foot on a co-op.

I traded up for a 7 unit apartment building.

.-- Starts picking back up end of February when this tenant pool starts getting their income tax refunds and aren't broke anymore.6) Section 8: where is the property being advertised?

While I often “trade” properties, a friend of mine is a buy and hold guy.  

You're off to a bad start if you must create a poor perception of other options to make your concept look good.  

So I start with the sponsor first.

To answer your last question, my realtor has contractor contacts I should be able to leverage for rehab budget estimates, as well as family friends with experience in the construction trades.