So, yes, you can absolutely get a traditional loan using 20% down an receive a loan with lower closing costs and a lower interest rate...or you could go the other route.Hope that makes sense how I am describing it. 

If cabinets are in excellent shape, leave them alone.Accent wall adds no value.Would need photo and layout of existing bath and proposed bath and total rehab cost to tell you what value it adds, my guess is it adds $5000 in value or less.

Thus, it does little good to garner high cash flow from these rentals only to spend it in higher maintenance, management, and legal costs.

The only negatives with an assumable loan is that they take longer to close, 60-90 days generally, and you would also need to come to the table with a little cash to cover the sellers equity (if any) and some other closing costs. 

Such as renovation costs, money I paid for it, etc?

I estimate this is true about 80% of the time.

If after the repairs were done, I would be asking my attorney if I can recover some of those costs. 

A DealCredit currently costs $.99 on the basic plan, and $.80 on the Enterprise Plan of DealMachine.

And unless they're damaging the unit, I don't think I would go so far as to evict them for not paying the deposit, it will end up costing you more.What you might be able to do (check with an attorney) is charge them a late fee for not paying the deposit.

It may be possible for a UPS Store to print it and have them pick it up to save on shipping costs?