Looking to link up with a few people to chat systems, whats working / whats not, planning for future business model changes etc.

But I need to model it out more than just my napkin math.

I'm sure we could refine your model even more but that's what I saw after looking at your model for two seconds.

But they were very rate sensitive in their model. 

Hello Matt, are you only doing prefab wall panels, where they are assembled before delivery, or are you going to the next level with a full Prefab modular construction, where the units are completed at a factory and relatively minimal work is completed on site.One issue I have heard on the modular construction is the manufactures are sold out for this year.You might want to check out www.VuhausLLC.com/models they are doing high end modular construction.

Very few succeed with this model and those who do are the contractor types who are driving around in their work truck putting out fires all day.

I find this hybrid model allows me more certainty about occupancy, and less work on turnovers, but I can still maximize profit. 

@Eric Fernwood we have the same business model.

There are many REI specialized accountants on this forum who provide bookkeeping and tax services, but all of us have different models of service, different approaches and different prices.

Either way we, in the simplified model, expect interest rates to lead to stagnant or falling prices.