At a minimum, it should list a start date and then the length of the term.

However, that won't work for several reasons:  1) The lender is not going to finance the $15k assignment fee2) The lender isn't going to consider the purchase price in this example to be $150k, they would typically use the $135k price in the original contract, and 3) In this particular example they may not even use the $135k price because it's not an arms-length transaction since it ultimately boils down to a deal between you and your father.I applaud you for trying to be creative, but ultimately what you're proposing isn't going to work and it's going to make the transaction a lot more complicated than it needs to be.

Is $100/night way overkill with this length?

Turnover costs are functions of many things including length of tenancy, quality of tenant, occupancy level, existing finishes (carpet has shortest lifespan but is cheap), etc.I hope unit is ready to show by Nov 1.  

Length of stay is around 2.6 days.

Same with the 50-100% of one month of rent for Placement.NOTE: STR doesn't charge for Placement - hence the 30% figure.Recommend tying the MTR fee to the length of the stay - the shorter it is, the higher percentage you may want to charge.

I have written at length about the case and effects of inflation.

The time depends on lease length and how long they've been living there.I would also recommend reaching out to their caseworker (if they have one) to let them know the lease will not be renewed.Section 8 voucher holders are incentivized to vacate quickly in order to keep their voucher and avoid having to pay full-market rent out of pocket elsewhere.Hope this helps!

**Length of Agreement** - States when this contract ends.

with my last tenants I tried posting rent "discounts" for length of lease.