Highly recommend

I'd keep 70% as a base and shoot for 90%+ on the high end.I think I'd be pretty happy with 90%. 

I don't know how difficult of a task this would be, but suspect it would make for better quality forum content. 

If you really like the place but you feel that it is priced too high for your budget, instead of saying “it’s priced too high” and insulting the seller, simply say “I absolutely love your place; it is exactly what I want, and I’d really like to buy it.

The other areas you mentioned are too high for this particular need

If either you or the investors are not highly experienced, this system is very very difficult to slow the first couple flips profitable. 

Again even if you have great credit as you start to add more credit cards, mortgages, auto loans to your credit you can also be viewed as "High risk" due to Excessive trade lines in credit or higher DTI - debt to income ratios. 

@Luke Tetreault I am new myself and working currently to get to that point, but what I intend to do at your point is to JV on deals or offer PML for high turnover deals (EMD/ Double close).

BiggerPockets also has a calculator to analyze deals, and I highly recommend you start this as soon as possible, even if you are not ready to buy.

And when talking to a buy you say "ha, ha, ha, look at the deal we got, we got that person to give us all this $ from there cashflow"The whole thing wreaks to high hell.