You want to keep both accounts and then would rollover back and forth between them correct?

I will make a note to have the remaining tenant sign a new lease and not just let the old one rollover.

That is Rollover as Business Startup.

So now I'm contemplating a shorter - auto-rollover - lease - like quarterly or a 4-month lease, such that if I run into problems again, I may have a shorter time frame to get rid of them!

Is that going to be two rollovers then?

If I were building a new home, I go to the bank to get construction financing, the plans are appraised, I get the loan, I build the house, If I don't have a contract and need to roll over my loan, the appraiser gives a final estimate of value after completion.

@Shera Gregory when you are no longer working for your current employer, you can rollover funds from your Roth 401k into self-directed Roth IRA that you currently have, combining the funds.

Once you have made those contributions, you could then establish a Solo 401k and rollover the SEP funds then close that SEP account.  

You can go back to the same plan or a different plan.You can only do one such "indirect" or "60-day rollover" transaction per year.You can, however, have IRA custodians do a direct institution-to-institution transfer as frequently as you like.So, just get that $30K back into any IRA ASAP.  

. - the year the rollover occurred inStarting for conversions performed in 2015, but optional for 2014, I believe, the type of assets being rolled over are under new reporting requirements by the IRS.