As an investor focused buyer's broker I spend the majority of my time helping buyer(s) assess properties both before and after their offer is accepted. 

Yes - give them 1 week to accept it and move out with X amount of days.

Gave us written acceptance, went through the appraisal process, but then while rounding 3 base, choked.

My recommendation would be a documented loan with terms you find acceptable, not a partnership.

If that's fairly short like 3 to 5 days, the seller's likely accepted an offer near asking price or higher.

I'm assuming that once these platforms become more accepted as just another asset class (no different then mutual funds) to invest in for one's retirement (and I do believe we're going that direction) the restrictions on who they let fundraise on their sites will actually decrease a bit as the occasional blow up will do far less damage once RE crowdfunding has a lengthy track record. 

We just put an offer in on a riverfront one bedroom cottage on a half acre property in Oregon that we expect to be accepted, here's how I plan on purchasing the property with less than the cost of an apartment rental deposit in SoCal:Purchase price is $330k as a FHA Primary Purchase with 3.5% down ($11,550) and a 2.5% ($8250) seller concession towards closing costs.

I am an out of state investor in Indy and recently got my offer accepted but the lender is now offering an extremely high rate 6.375% with a 3.5% discount rate for $3,172.

Seems like I should just accept a poor performing investment and wait.

I accept chocolates if you feel so inclined ;-)