I'm currently working to rehab and add value to a duplex in SF, and then hoping to use that equity created to fund more REI.

You won't take the credit hit unless you actually apply for a loan.You may want to talk to the commercial lending desk and not residential (think one loan for 8 units, vs. 8 individual loans which would probably be too small for them to want to do).

Listsource has a sister product called Real Quest, same company, that is better for looking up individual properties.

Corporate and Individual Tax unfriendly state (Aetna, ge, Otis elevator to name a few left this year.

there seems to be numerous pre-purchase analysis software programs for creating a pro-forma for multifamily Acquisitions, available in the market.

I target properties where I think we can create a higher and better use.  

It's all individual choice and comfort level.

I work with non profits that provide community based living services for individuals with special needs. 

Real Estate is changing and I wanted to really catch the wave and not be stuck "cold calling" all day and waiting for an opportunity instead of creating a few along the way.

In my current company the interest rate is 6%, and a set tiered fee schedule (does not go to your 401k this goes to your 401k provider).Which is better depends on tax brackets and state tax rules.I guess it really comes down to overall cost and which can help you create wealth more quickly.