I don't know which are best but you can bet if it supplies too little the tenants will change them for ones that flow more.

@Vanessa SwitzlerHuntsville is going through a correction right now, with supply outpacing demand.

For those STR operators and investors that are not comfortable self managing (communication with tenants, scheduling cleaners and organizing supplies) one option is to hire a designated full/part time employee. 

YTD New Listings: 14,091, +4.17% Yoy.Months Supply: 1.4, +16.67% Yoy.Cumulative Days on Market: 43, -13.33% Yoy.

you don't need off market land. most land is listed is fine. it's a buyer's market for land in most markets which means more than a 6 month supply. practice underwriting the deals and making offers, find deals they may do owner financing, etc on. 

As an owner is it better to a) install mini splits or  b) make renter supply their own air conditioner.

Low supply leads to rising prices.  

However, multi-family deals seem to be expensive, overdeveloped and in short supply on the MLS. 

Two of my guys, a container full of tools, supplies and materials, a tent to sleep in.

A few years ago a MF boom started (that is still going), and I realized my older units in cut up old victorians weren't going to cut it against new supply.