It pays the bills and was fun to build to this point, but is getting monotonous and we don't care to put in the capital to expand the model. 

If you are going to JV your land, you absolutely need to see the model,  in fact, if you have it, or when you get it, make it generic, but maybe think about posting it here. 

And Self Storage has a similar pricing model to Apartments (BUT see the above).It's been very good to me & my family and we invest in NOTHING but Self Storage now.If you think you may be interested in moving forward, I have a few arrows in my quiver that may be of service to you. 

You have no direct control over cash flow, allocations, contingency funding and modeling. 

I am working through my model and the keeping the best interest for my client / friend / seller keeps popping in my head.

(personally, I encourage the AirBNB model, I loathe VRBO's fee structure)  This seems to be the easiest thing to enforce from my POV, unless your model is people pay for their individual membership and are permitted to list as many VRs as they like.  

I worked closely with banks in developing REO models to liquidate properties they had taken back.

That business model works well for more static assets (private placements) but is not generally best for investments that are more time-sensitive in nature or involve a lot of transactions (rental real estate, tax liens, etc).There are a smaller number of firms that provide plans offering checkbook control. 

For both models, I wonder about the 15-amp current draw of the motor.

The analogous 'market' financial model I fall back on is this: the P/E expansion of a growth company, when the company introduces something 'New' that triggers renewed investment interest.