I find that a quick video can really draw people in, particularly in covid times when in person meetings aren't always possible. 

and that draws a Lot of folks. and keeps them there. 

Not to mention I was/am a highly experienced developer and not a rookie.If you were to hire your friend - the contractor to run the job for you and pay her the weekly fees/draws she wants and allow her to mark up the rehab by 20% or so, that would be fair and you keep 100% of the profits less your costs to hire your other friend the realtor who gets paid at acquisition for representing you at purchase and then again at exit (with the possibility of triple ending by finding the buyer too!).

Find a local attorney to draw you up a contract to use for every deal. 

Generally, you want to maximize the latter for leverage but banks only cover ~60-70% of the total project costs and allow you to start drawing after construction has begun.

I'll go take measurements of a site and take mental notes and think I have a good gauge of a property but still find myself referring back to site pictures and written notes half a dozen times when doing as built drawings because there's a ton to remember.

When drawing up the PSA, do I need to put both tax lots in the legal description of the property, is it included, or do I need to make a separate PSA with the other tax lot?

Unless you are referring to a marketing plan that is meant to draw in people looking to sell to investors, aside from your real estate brokerage.

Eventually Zillow/Trulia will draw from this data source.Of note: both Zillow and Trulia are not accurate sites.

I had also provided plans and drawings prior to the start of the project.