In Ewa, you should be able to get a few more true comps around the same size as your target property without having to use one that's 600 sqft larger. 

Obviously the size of the lot will dictate how many units I could ultimately get in there but this zoning designation is pretty crazy in what it allows for developers to do.

(# of bedrooms, baths, size etc.) • What do you like most about the home?

I recently wrote the blog post What Serving on My HOA Board is Teaching me About REI and today I can add one more item to the list: Opportunity to Find Partners.

First come, first serve.

How do you get comfortable with it's size?

Buyer has examined the Premises and is relying solely upon such examination with respect to the condition, character and size of the land, improvements and fixtures, if any, constituting the Premises.At Buyer's own cost and expense, Buyer shall obtain and maintain in full force and effect at all times during the continuance of this Contract: (a) comprehensive liability insurance for bodily injury or death to any person or persons, and property damage insurance, in such amounts as Seller reasonably deems necessary; and (b) fire and extended coverage insurance in an amount sufficient to prevent Seller from being a co-insured under said policy of insurance, but in no event less than the unpaid balance due under this Contract.Seller and Buyer shall both be named as insured parties in the insurance policies required above, as their interests appear, Buyer shall furnish Seller with memorandum copies of such insurance policies upon Seller's execution of this Contract.

What is the size of the lot? 

Unfortunately, the expenses are still variable and are always unexpected is such properties - the price of a roof, hot water heater, or air-conditioning compressor replacement will be about the same, regardless of market size.   

At this point, I'm not even sure what size facility to build.