I do not know about your current financial situation or the property but you should have have a liquid cash reserve of 10% of the loan amount + all cap. ex.

We have great credit, we have about 10k liquid today but we don’t have enough equity yet for an equity loan.

What's the best way to go about liquidating this stuff?

Amazingly they held up well, but we did coat the old drywall walls with with 'liquid rubber'.

I've been saving since middle school, so in sum I have $10k in liquid money even though my actual income is $13k/year.

My banker called me and told me that the bank was going to give me what was called a bulk sales approach appraisal (something stupid that basically means that if the bank had to liquidate my portfolio quickly how much could they likely sell it for as a packaged deal).  

As long as you have the net worth and/or liquidity a portfolio lender will give you financing for something like this. 

I used Liquid Nails the first time, and Loctite Powergrab the second (both versions specifically had the words "tub surround" in the description). 

One issue I see is folks buying rentals with their IRA and tapping it out.. so when this stuff comes up they do not  have enough in the IRA to take care of unforeseen events.. so its doubly important if your buying rentals in the IRA to have a very nice amount of money left in the IRA in liquid investments. 

Once a loan fully liquidates, I add in the actual address, net profit, ROI, and Annualized ROI.