As to renting, the current financial model from a re-fi some years ago provides a negative cash flow.

Maybe not for you, but burn one or two beginning investors and word will get around about your deals and valuations.I would strongly suggest doing manual ARV's first, and then maybe checking your numbers with the automated model, and go with whichever number is lower.This may just be my own opinion, but I would NEVER trust the ARV of a wholesaler who told me the valuation was automated.

I have very similar aspirations.

Even more than a bad deal, a bad life partner can REALLY cripple any real estate aspirations.

I do have vacancy, maintenance, and capital expenditures accounted for in my model, and I'm running in the green by about 7600 a year- still, I thought the margins may be a bit thin.  

So I had an idea of learning financial modeling, and offering to analyze deals for a small fee ($20 bucks or so).

There is not really a no money down model persay that works in the real world of investing

If you have a fancier kitchen faucet it may not work unless you get one for the specific model.

Some are passive investors, some are aspiring syndicators, some are experienced syndicators looking for passives, some are money raisers, etc.

You can kind of extrapolate a cap rate based on this and it aint great. 3.5-6% would be my estimate based on how agreesively you model expenses.