Each month, you could adjust for any overage/shortage, or just balance at the end of the lease.

In my area most students are willing to start a lease in May because of the shortage of housing in the area and very few places are available in August. 

@Elizabeth Colegrove. and @Matt Good  During the boom in 2003-2006 there was a shortage of drywall and the builders were waiting for deliveries.

There are many good ideas listed in the comments above for overcoming a cash shortage.

Most appraisers would even look to neighboring (smaller) lakes for comps if none existed on this lake (I don't agree with this practice)- but this lake has no shortage of waterfront homes for sale, so the 6 comps you have should be pretty representative, adjusting for finishes etc.

If you think about the codes they make sense.Also, in alot of bigger cities there is a shortage of affordable housing so your pool of potential candidates is pretty large.

Unfortunately with real you can end up having to pay the shortage when you sell.

If its recourse, and there is a shortage (you're underwater), they will come after you personally for the shortage.A loan like 10/10 means ten year amortization period, due in 10.

I also think that there is a shortage of multifamily new construction and know of a guy who's crushing it building and selling 4plexes.  

And while this building you have found is perfect, there are no shortages of alternatives...