They're continuing to raise money from new investors even though I haven't been paid back.

Looking forward to pre-ordering sir Nathan!

Advice is to run the numbers, she what you could get for renting out the spaces and then if not already get pre-approved for a loan (or cash) and submit an offer.

Our property manager would then do a pre-listing inspection.

Because I have another investor on this project and I have to pay him out of the profit, and also is it possible to get a pre approval letter before selling my investment property because it throws off my debt to income ratio, but it's an investment property that is meant to be sold.

Im much more comfortable with 15 year mortgages closer to 5% or under (not going to dream about the 2-3% rates  pre pandemic).

A title company settles a claim in 30 days, usually... you have borrower paid insurance? 

I paid for the banner and the installation. 

I took a loan against myself to help provide reserves as asked for by my lender and paid it back to myself relatively quickly. 

However, I suggest, only opting for a paid walkthrough with a contractor when you're certain about purchasing the property.