What sort of multi family property are you looking for? 

@Nick Kohilas The going rate really depends on the market, I've seen as low as 20% some places and as high as 50% in others.  10% is a pretty standard rate for a long-term rental PM, but that's a very different sort of responsibility and on the whole is less time/effort investment per property.  

I haven't touched the profile in a long time, so it has to be some sort of system glitch that erased my info. 

This sort of property is expected to move slowly but there is demand. 

I use Buildium (though I've sort of out grown it).   

Tenants that do this sort of thing typically have done it many times in the past.

There are financing options for self-employed borrowers in these sorts of situations, but they require a higher down payment than FHA.

If they have other property (outside of a primary residence) then it could work out but you have zero equity protection and going in 2nd behind hard money provides all sorts of risks and issues, even if they allowed you to.

I'm trying to sort out my options and make the next best move now, or within a few years.

The metal shell package will only be $30/SF but by the time you add in foundation, slab, MEPs, doors/windows and framing and any sort of architectural facade I think the vertical cost will be well over $100/SF.