Instead of complaining to them about their high fees, ask them what, exactly, justifies a particular fee, and then suggest compromise.

Some may do a second position equity loan if the equity justifies(in your case it does if the lender will lend, since property is paid off).Otherwise, your other option may be a DSCR cashout refinance on your property.

One of the problems I see is that wholeseller’s cherry pick comps in order to justify their ARV.

It is a larger property with a lot of spaces to market, when you look at a traditional type of leasing structure of paying commissions it is hard for agents to justify because it is smaller spaces. 

Now, can you justify your 99% number?

If you are selling this property they buyer will need comps to justify the price. 

Fees should be clearly stated in writing, easy to understand, and justifiable.

There are ways to get an agent to sign for you, but it is pretty hard to justify it in a transfer to yourself, and you will run up a pretty good cost. 

Fees should be clearly stated, easy to understand, and justifiable.

I've issued separate checks for labor and materials, for my bookkeeping convenience, though you can separate the expense items on the check remittance advice.Just to say if you're gung-ho on doing the 1099, just do it, you don't need time logs justifying it.