A flipper would probably go wherever they could find the best deal and do the max forced appreciation.

the power of real estate is through proper use of leverage, and appreciation forced or otherwise.you buy it with another persons money (The banks) and pay it back with another persons money (the tenant's)  The CF thing is misleading. 

Then one day comes that there is no more cash value left in the policy and you are facing with huge bill to keep the policy in force.

-If the the investment is multifamily, generally 40% of Solo 401k funds are required.Typical Loan Terms Available from Banks Specializing in Solo 401k Non-recourse Loans-5year ARM-10 year fixed-20 year fixed-25 year fixed-$50,000 to $55,000 minimum loan amount is the common figure.

I'm having to force myself to take this jump because I'm awful about going into analysis paralysis. 

I'm wondering what options are out there that aren't going to cost an arm and a leg in lender fees.

Is this smart investing to force a rental to pay by infusing cash??

One of the initial reasons why these clauses were created was that during times of rising interest rates lenders could force you to refinance at the currently higher rate (more money for the banks).

A court might look at that agreement, determine that the tenant has an equitable interest in the property, and force you to foreclose on the property rather than evict the tenant.  

With all the forced (job) and voluntary 'relocations...'