He uses poorly thought through methods, I've listened to his "methods",  Thus, he has the high amount of  Due On Sale called in a short period of time. 

I would highly recommend you create an LP agreement.

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.

If prices are too high people will just go elsewhere.

I talk to so many people who regret not getting a PM up front because they are having problems or high eviction rates doing it alone.

Most of these folks don't want to lose their voucher.Additional issue, when rent is too high, it slows down leasing. 

we are pretty high that is for sure. 

I use standard market PM rates in my underwriting, but I also would not work for those rates but it is fair compensation for the work.I typically use vacancy of 5% not because I have ever had a unit that had that high vacancy but I do not have a no payment category and I want the underwriting to be conservativeon the opposite, your rate is a bit high and your appreciation rate and rent growth are modest.overall, seems like a decent attempt at an analysis.  

I would highly recommend sticking to the 30 year option or not doing it at all. 

90% is pretty high.