Unfortunately this neighbor is not a good source of information concerning the tenants as they’ve either escalated the parking situation to the point of petty vandalism or they’ve become so obsessed with the vehicle parked in front of their house that they’re willing to go beyond the pale.  

Once I have them under LLC's, I want to have their mortgages changed to a commercial loan or some other loan vehicle.

Definitely only have a 1 year prepay so you can refinance into a longer term vehicle and I do like the interest only 40 year options on these. 

There are also specific trust vehicles known as 'Delaware Statutory Trusts' (DSTs) that also qualify.Part three is really not related to 1031 or DSTs specifically, except that the above only serve to defer taxes.

I was wondering if there were any other vehicles that would be more advantageous than the Solo 401k for investing in real estate.

What vehicle can I set up to hold this money so I avoid cap gains tax?

If its better spent elsewhere then you may want to reinvest or redirect that money into other vehicles with comparable risk (not saying you should go full speculation or full spec like Cypto's, building spec homes, or something you have never done before, etc).The other way to look at it is if you pay off that 3% note or mortgage you're in essence saying that you're accepting to save 3% annually or .25% per month (X12 months = 3%) effectively rather than investing it else where.

What Charlie said plus factor in all the expenses the agent has such as gas, vehicle maintenance and insurance, health insurance, E&O insurance, desk fees, MLS fees, Realtor association fees, marketing, cell phone, etc. and they’re almost certainly losing money on this transaction even with the $800 added on.

Underground power lines are typically pretty reliable and aren't at risk of having trees falling on them, or being damaged by strong winds, long term exposure to the elements, vehicle accidents, etc.

@Michael Hyun We wanted to make our Costa Rican Family and Corporate Mountain Retreat a unique stay so we bought a property with amazing views and then added these features:- Art on the walls by local photographers of beautiful places to visit in Costa Rica- Pick up and drop off at the airport plus vehicles for rent onsite- Authentic Costa Rican meals cooked by our grounds keepers- An exercise room with weights, a treadmill, and an exercise bike- and tour guides that can take our guests on excursions.