I would want Central HVAC in my home but keep in mind that you need to keep these units in the price range for your clientele.

(I was told I would be looking around the (1800-1900/month range by my realtor)2.

Or do the engineers think diversity of thoughts/ideas will not benefit them? 

@Mark Cios I have looked for quads but the ones on the market right now are either a) they are meth/crack houses or b) a little out of my price range just starting out.

I am unfamiliar with their operation, however they appear to be flexible enough to satisfy a range of needs and could be used in the absence of a single large tenant.

Doesn't assume a Cap rate, but give potential "range" of value.

I work with the 1-9 unit range so having 10 would fall outside my options and it would be harder for me to source/qualify my clients.

Rates are a bit higher than conventional but if you're talking to the right people and have a strong credit score then you should be getting priced out in the mid 5% range which shouldn't eliminate cash flow on a great deal.

What price range are you looking at, out if curiosity? 

This could range anywhere from full on online systems/dashboards to as simple as electronic door locks.