Given the circumstances, I’m unsure whether to proceed or back out of the contract.

Every dollar  matters when you're starting out. 

I'm guessing though that since the IRA owner isn't allowed to take out a salary, perhaps the SDIRA LLC will be required to hire employees? 

Quote from @Chris Menne: I am considering moving out of state in the next year or so, and wanted to get some opinions on either selling my current house, or turning it into a long term rental.

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----------------------------------------------------------------------------------------------Recommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

Best of wishes out there.

Here in Chicago, we've found some of our best contractors from other good contractors or investors; I've found the in-person meetups yield the best results, so maybe you can take a trip to Maryland? 

I know BiggerPockets already has a number of great calculators, but is there anything niche that people are interested in?

You're in Detroit and considering investing out of state?