Will getting sufficent property insurance be an issue?

I totally understand your sentiments and wanting to save yourself money by listing the rental units yourself and feeling that tech and your professional acumen would suffice to get these units rented and you certainly would succeed but something you have to consider is the value of your time and professional expertise.

For a 1000 sq ft apartment something simple will suffice.

OR would people powered toys suffice?

@Alyssa K.If you get the clear coat off muriatic acid wash should suffice (check with mortar company)Usually what happens with these things is 90% easily comes off but the last 10% is a pain.You could try Jasco paint remover but that is a bit messy especially for expectant mothers.

But if you're asking how is the value attributable to any land component of a given property acquisition determined, any reasonable method will suffice (e.g., allocating the land value based upon local property tax valuation ratios might be acceptable).

I don't want to get ourselves into something that cost us to lose money to start, when starting small would have sufficed. 

This implies that a fair reduction in rent for the loss of the use of the garage may not suffice.

Does a 17 cap suffice?

Are the receipts and invoices that I will use for my accountant going to suffice for this?