My concern would be liabilities and/or damages of a swarm ended up in my house or a neighbor's house.SwarmFor the beekeeping lease addendum:Based on Theresa's recommendation, specify the maximum number of hives and the location.Require the beehives and bee keeping area be maintained.Require the bees be removed when they leave and the area be restored.Clearly state the tenants are responsible for any damages arising from the beekeeping activities.

I have a GC that I am using most of the time for my rehabs, but I also want to develop a list of reliable backups when the need arises. 

Think about it; we hold a popularity and slogan contest every few years to select who we most "like" to hold the power of dictating and running these major functions.

What kind of problems could arise?

Having access to capital at anytime seems to be a better more popular option for most investors.

Inclination is to buy and hold, although I don't know what I'd do in a few years when I eventually move.I'm looking at the nicer/more popular areas away from downtown, feeling nervous and hope to find the right deal!

There are lots of potential issues and pitfalls that can arise in a partnership.I believe you need to think about all of this and my sense would be to only bring in a partner you have a prior relationship with, one who you know well enough and long enough to be confident you both good work together moving forward.

A popular piece of advice given here is to offer to work for an established investor for free.

At least in my market, those are not the most popular places to advertise rentals. 

Lots of comm loans are cheaper with a limited balloon vs. full amortization2) Since you're trying to juice the CFBT in your limited time, interest only is popular.