If it's a lower purchase price but your taxes go up with no limit, that will eat into your profitability. 

You're not planning on just eating this are you?

More diapers, clothes, eating out? 

BUT i wouldn't buy with the intention of selling in 18 months. you never know where the market will go, your closing costs could easily eat up the equity you built up, etc. 

That is the only real way to find your fix n flippers deals if your wholesalers are eating all the profits and the MLS market is on fire. 

It eats a lot and needs pretty constant attention.

If water is common, is that billed back to the tenants or you as a landlord have to pay for it and that will eat in your profit. 

Eat your losses and move on to the next one. 

Having one asset per LLC will drive you and your accountant insane and when you realize they charge like $1000 min for LLC returns and you have 5 LLCs that the $5k tax will eats up 1/2 your cash flow you will be like oh boy…

All agents are incentivized to sell it's a transactional business and because you are just starting out and in a low barrier market you will encounter many new agents who need to eat and pay for their gym membership and car that month.