Current retirement portfolio includes reits in Roth vehicles.

Things like people needing a jump start, a flat tire fixed, being locked out of their house, borrowing a boat motor, providing deer processing equipment, fax service, finding a place for their girlfriend when their wife shows up unexpectedly and sending/receiving packages are things I do for my tenants regularly. 

Finance vehicle is the LLC installment operating agreement if I understand correctly I'd have drawn up by an attorney.

I have a Commercial Lot that I will be leasing to a company I own for Vehicle Storage in El Paso, Tx. 

I self manage as well - otherwise, I would have picked a different investment vehicle. 

As long as you can comfortably pay back the HELOC, it is a way to get started.Instead of borrowing against your 401k, talk to a financial adviser about how to roll it over into a self-directed 401k and use that as your investment vehicle

You don't have a vehicle but can temporarily borrow one every other day temporarily (so no uber or food delivery).

If this is some sort of PE-type vehicle then you will probably be facing illiquidity and/or other constraints i.e. you can't sell like the normal REITs.

That's like asking "What is the best vehicle for me?"

Also, If I purchase a new vehicle for that, can I deduct this expenses?