Bases get closed occasionally, and you don't want a base closure to happen and your rental base to dry up as well.

I am also not trying to be an ******* to them by raising rents every year, but I do intent to raise them occasionally.

Some investors I know are trying to build as quick as they can as houses have been selling as quick as they can get them up despite the rise in building costs and occasional slow downs due to temporary shortages of materials. 

Their landlord wasn't very friendly, and would not occasionally surprise them with a gift of booze and porn mags.What are the mistakes you've seen other people make?

We also do occasional team events (e.g something active in the nature or a nice dinner with the team).

If you aren't actually practicing regularly, but only using your license for your own occasional investment purchase, you might end up where the only type of broker that will accept you will be a desk fee type, which is another cost you should account for.I'm not trying to talk you out of it.

- Are you willing to make occasional house calls?

Occasionally a warranty can be a good deal, but statistically speaking, you are on the loosing side.

Back when I used to flip, I would occasionally lose money on a deal, even with me (a GC) as the owner.....the project takes longer, markets dip a little....oooops.

It does occasionally happen.