I have considered doing a TIC/coop in San Dego but have the belief, without any data except for how I would value the financing challenges and tic risks, as being much greater than 10% price difference from condo price.  

Mainland banks can not finance in PR. 

Jacob,The advice you are getting from this guy who is "in lending" is very vague and is not covering all of the fine lines that manufactured home financing requires.

After you get that first one, I would start looking for BRRRR strategy, and if you have time to market direct to seller you can try to negociate seller financing and sub to deals. 

.- Bigger area rug. 9x12 for King, 8x10 for QueenBedroom 2- Change location of TV to across the bedBedroom 3- This bedroom needs an optimized layout-If it’ll fit, scrap the bunk bed and do 2 twin beds along window wall with a table in betweenBathroom 1 & 2- Wall mounted blow dryer- Wall mounted body wash. shampoo, conditioner dispenserPatio- Scrap mini golf for fire pit seating for 6- Install canopy shade- Better design for photo-op wallOverall, great property, great location.

However, you could buy a property with seller financing.

These included cash buys for flips, seller financing, and subject-to deals.

If you're willing and able, I do recommend the "house hacking" strategy which is just a fancy name for buying a rental property and living in one of the units, because you'll get very favorable financing - an owner-occupied fixed-rate 30-year mortgage.I'd also say, analyze that property as if you won't live there and it's a pure rental, and make sure the property is still cash flow positive if there's a tenant in your unit because then you'll know if it's actually a good investment.And when you analyze it, include payment of a property manager in your #s because if you don't, and doing so would make it go cash flow negative, then you've just bought yourself a job because you literally can't step away from managing it without losing money.

They gave me decent terms on financing the rental and providing rehab funds but it did not make sense with me being so close to finished. 

People have to remember that the seller finance space fills the gaps that the banks leave behind.