He says he'll call me and bid as I tell him to.4) Are there other elements to this that I am completely oblivious to? 

As you’ve done more deals, and carefully documented them and the results, your track record will speak for itself and will be a key element of establishing trust amongst investors that don’t already know you. 

If you are considering a larger multi-family, there would be additional things to check like employee records, reserve funds, review of bank accounts, environmental assessment, and more.

If major CEQA processing is required, such as a full Environmental Impact Report, hire and manage an environmental consulting company for the production of the EIR and all necessary CEQA documents required for the completion of the environmental review.

I come from a professional commercial construction background with a Bachelors in Interior & Environmental Design and I currently work from home in E-Commerce/Marketing (hoping to blend all these backgrounds into a real estate investing :) I had a specific opportunity recently come up that I'm needing some advice on...

More inventory would solve this situation of affordable housing, but we have all the environmental concerns in this state. 

In Spain, I'm out of my element.

When deciding what elements to spend money on for a flip, the best advice I received was:"If you do this/don't do this, will it stop the house from selling?" 

Here are some elements of security to consider;  Building Entry Doors Access Systems - How do visitors notify tenants that they are at the entry door?

I was thinking about something like this: https://www.homedepot.com/p/Grosfillex-Element-36-...or this https://www.homedepot.com/p/Nuvelle-Deco-Strips-Al...I'm not sure if this will save any money or not.