This will make it very difficult to extract all of your initial investment (purchase plus rehab costs). 

@Ralph E FreemanIf you have established a Solo 401(k) with a reputable provider, they should be able to assist you with all of these very basic operational questions.If you have obtained a set of 401(k) plan documents with no meaningful support, then you should engage a CPA or attorney who is familiar with IRS rules and the operation of a self-directed retirement plan.

While there are many ways to measure investment performance, few metrics are more popular and meaningful than the return on investment (ROI) and internal rate of return (IRR).

Really meaningful discussion, thank you again. 

I specifically have a tenant who would pay if I could drop a (meaningful) 3 days to pay or quit notice on her door.

The investors can make money in any investment cycle and still know how to extract value when the common investors run for the hills due to limited knowledge of that specific industry.I love retail.

If I had completed the 3 refinances I had in the works, I would have considered doing something similar with my extracted funds until invested in my next RE (ad)venture.

This implies 1) There will need to be market appreciation to be able to extract value via a refi or selling 2) It is cheaper to buy a property with an existing ADU than to add an ADU.

Properties that start cash neutral or a little cash negative quickly become cash positive at the first or second rent increase.  10 years down the road, they are very cash positive (assuming no equity extraction).These are not ordinary times. 

I've been using this downtime to solidify my investing plan, expand my knowledge of the market/industry and now beginning to form meaningful business relationships.Those with experience investing in Fayetteville or starting out like myself, feel free to reach out.