Start with your long term vision first. 

The buy now or buy later is one of those questions that depend on your vision of the future.

Your with tunnel vision on these few numbers which honestly, that analysis style WILL loose you money, because your going to get into a descending market, or a maintenance time-bomb, a tenant class you can't manage and the following tenant nightmares. 

@Mike Sullivan in my opinion, if your vision is keep the properties for long time without exit strategy it’s ok.

https://www.panews.com/2019/10/26/downtown-vision-taking-shape-motivas-aggressive-plans-could-have-workers-in-place-by-2020/ 

Lol, kinda bursts my bubble a bit....I had a vision.

Everything depends on what you want out of the deal and what's your long-term vision.

It'll give you a 3d diagram of what the potential for the lot is to give you the general vision of what you are going towards. 

Is there a shared vision for maintaining/upgrading the unit?

@Mark Esposito You can order one from Valuation Vision for @ $100.