I know for sure people will love it but I am wondering if there is anything I should be aware of. 

Marking up repairs & maintenance, farming out customer service to people that can barely speak English, charge a lot of junk fees, etc.I'm just not comfortable doing any of that.  

But when their business relationship with the actual bank soured, the API connection was severed and the people were basically left without access to their money..

There are certainly people out there who will do anything to make a deal and make a buck but it's not in my best interest for the client to a) not trust me moving forward and b) have millions of equity wiped out which could hinder future purchases.

I love helping people so being an MLO I feel is a great entry point, however, is it really worth it?

The people who are already working in that specific market will be the ones who will be able to give the best direct advice.

However, for two people being roommates, some privacy would be better I think...What would be the best way to somehow install doors or some kind of separation?

true people search is pretty solid and its free.

$300K should allow you to buy a duplex/2-unit and both doors should be offering a profit even at 15% down.If you are in a situation where you are getting hit with high taxes, high rate, low rents it might be a "Walk away deal".I have to have conversations daily talking people out of buying a particular home because its a bad deal.

Most commonly, I see that clients can do a rate and term refinance after 30-days of ownership but most people wait 6 months to be eligible to do a cash-out refinance.