Always get monetary concessions... never rely upon a seller to do anything after closing, unless you want it done half-assed and on the cheap.

They tear it out when they leave, and leave you a big hole.  

Not going down the rabbit hole of any negative comments.

Patio screen door has many holes - replaced with new screen.10.

Every extortion attempt I have experienced in Baja has happened North of Ensenada.Beyond Ensenada are cool things like wineries (I do not drink wine), La Bufadora and its blow hole, great little fishing villages, Gurerro Negro and Scammons Lagoon (best whale watching on earth), San Pedro Martir (least visited forest region within a day of San Diego and has the twin Picacho del Diablo peaks and the national observatory), numerous Missions in various degrees of condition, hot springs, party towns (San Felipe), surf towns, snorkel/diving (anywhere in Sea of Cortex in Baja Sur), Sand Dunes (Baja races), etc.My worse theft south of Ensenada has been some bottled water.So the question is why Rosarito? 

Secondly, I think understanding guidelines, the constantly changing landscape, and really being able to offer many different options to tailor the lending needs to the client rather than force a square peg through a round hole. 

Shure, we can run down a rabbit hole of complexity, but why.

Attend a couple meetups/REIA meetings and talk to others about what you want to do and where you feel your holes are, and have them help you for free, to at least refine that list so you can talk to Jake and ask how he will help with your specific gaps in knowledge.

Forums are in most part opinion black-holes. 

I've seen these situations spiral out of control and lead to occupants neglecting/damaging the property, such as making holes in the wall to look for hidden cameras, nailing doors and windows shut, etc.