If you spend months setting up your database now and then a few years entering client info what will that do you your ability to switch brokers in the future and what will it cost you in time (money) when you do switch. 

I would love a TRUE unbiased comparison of these tools to determine the best one to use. 

A lot of lenders that keep a portfolio of loans (usually the smaller ones) have the ability to do this.

I would also talk to my lender about how this would effect my borrowing ability.

Trying to determine if the tight timeframe required by the seller is necessary.

Challenge is the ability to refinance.

It's all about the investors ability to exit out of the loan and having multiple exit strategies. 

There are lot's of options so you need to determine your skills and passion and find a possession that suits both.

@Heather Frusco It is obviously your prerogative to means test your tenants to determine if they need help.

Answer:   I would have to review the entire Contract, including the provisions regarding loan contingencies etc. to determine your actual obligations but if you have legal counsel, then you should follow your attorney's advice.