Additionally, I'm reassured by those of you who suggest I can extract up to 80% equity as I'd read it was more likely to be 70%-75%, although that will likely differ based on property type.

Additionally, ask them how long they have been managing properties and what types of properties they've managed.  

However, I have a comfortable allocation of secured funds for investing and there other reasons I believe I'd qualify for other loan options.My question is, how do I see about getting additional pre-qualifications on identified properties/home values without lenders pulling my credit?

It seems I may have to get additional water back up coverage, not sure what to do ...

Additional BackgroundContractor says there is a lot of "unknowns" in the project.

Guidelines from Fannie Mae:-Calculation of Reserves for Multiple Financed PropertiesIf the borrower owns other financed properties (determined in accordance with B2-2-03, Multiple Financed Properties for the Same Borrower), additional reserves must be calculated and documented for financed properties other than the subject property and the borrower’s principal residence.

it seems like the partner with the mortgage is taking on additional risk and not allowing him/herself the opportunity to finance other deals in their name.

Then i go on their website & after Exhausting my efforts, seems you Either Must be a customer/Member of theirs to even Purchase these i Believe, Or POSSIVBLY WITH A REFERRAL FROM A MEMBER YOU CAN GET THEM OR AT LEAST GET A DISCOUNT ON BECOMING A MEMBER.B/C I See These as Extremely Valuable (your welcome if you do too)ID BE EXTREMELY APPRECIATIVE TO ANY INSIGHT OR HELP.I INVEST IN SOUTHEASTERN MICHIGAN & APPRECIATE ANY THOUGHTS OR HELP IN OBTAINING A MAP..(..As $2-600 is far too much for a little map.)Thank you Again for your time, & i Really Hope this helped some others out with the idea.

 So on a deal like this I asked myself how good is the deal for the additional risk.

@Cody Backus - very valuable info.