What software did you decided on to handle the rent collection and accounting of the storage units if you don't mind my asking?

Typically management is about 4% of gross collected annual revenue and sometimes 5%.

No problem, here are numbers off the top of my head that I think are applicable.Address: 1823 Madison Way, Lynnwood WA 98087Purchase price - $583,000 (May 26 2021)Down payment - 10%Interest rate - 2.9% - 30 yearMortgage payment - $2800Rent collected from tenant - $2,000Stock Portfolio Line of Credit -$133,000Interest rate on line of credit - 4% (not a fixed rate and no fixed payment schedule)Last month my real estate agent ran some numbers and comps and thought $750,000 was what it might appraise for if we re-financed. 

Them selling isn't as easy as collecting a check and deep down they want to have the piece of mind that whoever buys isn't going to treat the house poorly or anger the neighbors.

I was going to collect a Deposit to Hold for 14 days for the person who doesn't need the unit until Feb. 1st, but then charge a pro-rated rent for the 10 days beyond that 14-day period.

It takes a ton of NO's to find wholesaling YES's that want to sell their house for a heavy discount to a "cash buyer" with no proof of funds and no true intention to close on the deal themselves.

Do you use a software/system with your property manager to keep track of all rent collected, capital spent on repairs, and more to stay organized?

They also said they could show me proof with Quickbooks?  

You keep the house, hire a manager, collect $3350/mo and pay $2200 in PITI.  

The state determines what taxes are collected.