Section 8  rates (and lower) will also give you a rough idea of what your market rent will be.Yours is an object lesson in the mistake of buying what you can afford up front rather than what is a good opportunity.People just starting out should only buy local, that they themselves can inspect and get a feel for.

Although the study may increase the gain, the gain may be taxed at a much lower rate making it a beneficial investment.If a property is purchased with the intention to flip or own for a short period of time (less than 3 years), a cost segregation study may not be significant.SHOULD I GET A COST SEGREGATION STUDY BEFORE OR AFTER REHABBING MY PROPERTY?

We took the reverse action and started lowering asking rents until they moved.I suspect the reason that one property of yours turned quickly is because your asking rent was very favorable vs. local competition. 

:Class A Properties:Cashflow vs Appreciation: Typically, 3-5 years for positive cashflow, but you get highest relative rent & value appreciation.Vacancy Est: Historically 10%, 5% the more recent norm.Tenant Pool: Majority will have FICO scores of 680+ (roughly 5% probability of default), zero evictions in last 7 years.Class B Properties:Cashflow vs Appreciation: Typically, decent amount of relative rent & value appreciation.Vacancy Est: Historically 10%, 5% should be applied only if proper research done to support.Tenant Pool: Majority will have FICO scores of 620-680 (around 10% probability of default), some blemishes, but should have no evictions in last 5 yearsClass C Properties:Cashflow vs Appreciation: Typically, high cashflow and at the lower end of relative rent & value appreciation.

I would like to have lower monthly payments should I make a big lump sum payment towards my principals and ask my mortgage company to adjust it or refinance it or which one is the best ? 

Could you not put a lower amount down? 

If I have lump-sum free cash, should I just apply it to my mortgage to recast so that my monthly goes lower?

Syndicates that used lower leverage points and have far-out maturities (such as 2029 or later) are likely to survive as long as they don't run out of cash to maintain the assets for longer-than-planned hold times. 

Local banks typically offer lower interest rates but might require a solid track record and detailed financials.

I got the terms mixed with open mortgage (no penalty to pay off early, but higher interest rates) and closed (more typical mortgage with lower rates, but the penalties to pay off the mortgage)...that'll teach me not to post too early in the morning :)