Best use- is there an alternative Best use for the land that you will damage if your storage fails? 

Alternatively, you will receive higher pricing because you will be viewed as someone who is difficult to work with.  

@Layla GambleGreat choice starting with a duplex in Jefferson County!

Or would alternatives like small balance commercial loans, portfolio products, or other creative financing options make more sense for a deal this size?

Wood, tile, acrylic and others alternatives (done well) are impressive, durable and functional.

This certainly does not imply that there are not markets where cash flow is possible or that cash flow is not possible via alternate financing, low leverage, alternate rent models, value adds, patience, etc.best wishes

.- I also cohost and manage properties in Tokyo for other owners.Along the way, I was fortunate enough to get a brief feature on the BiggerPockets Rookie Podcast with Ashley and Tony - which honestly inspired me to push further and keep building.I’d love to connect with others here who:- Have explored investing internationally,- Are working with tiny homes or alternative lodging, or- Are experimenting with tech/AI in real estate.And of course, if anyone’s ever in Tokyo, let’s connect on the ground.

It's near impossible under 600k and even those would be 203k loans most likely with rehab, depending on your neighborhood choice.

And why do you want to control their personal choice so they must carry this with them on the property; is there some kind of danger in the neighborhood such as wild puma's or something, or bears (This is a serious question)?

As you may find that alternative more trouble than it is worth, here is a simpler alternative:Only speaking as to CA (but likely in most other states), if you obtain an "abstract of judgment" from the court (for a fee) and record that abstract of judgment at one or more County Recorders (for a fee), the credit agencies will pick that judgment up and report it on the tenant's credit report.