At this point, I would recommend having a line of credit to cover these things so you don't have money sitting in the bank doing nothing when it could be put to work.I have 33 units, no debt except for mortgages, and excellent income.

Personally a cash-out refi could help me get more quickly into all-cash BRRRs or a REI venture in Spain, however I don't know to what extent this is at the expense of rental cash flows, and what is the wiser decision long term.I've combed through posts online and looked for Excel templates to run some calcs and get a sense, but nothing really filled the void... 

I’m not sure which one is the most realistic.BP Rental Property Calculator Rental Calculator: https://www.calculator.net/rental-property-calculator.htmlWealth Optimizer: https://www.rpmengage.com/wealth-optimizer Zillow: https://www.zillow.com/rental-manager/resources/rental-prope...In addition to the ones listed above, I’ve also downloaded Excel spreadsheets from a couple of other sources.

I agree with @Chris Seveney that Del Ray would be an excellent place to do this.

Most PM software won't be worth the cost at this point depending on your budget.At this stage, a good ole Excel/Google Sheet will do for keeping up with your income/expenses.

However, it can be an excellent exit strategy to offload a property, diversify your portfolio away from real estate, or cash in on your investment.2.

Excellent guide!

However, I would write down in an excel sheet all of them and process that go into a rehab and do a estimation column and write-down those numbers. 

I faced a similar problem and ended up creating custom designed Excel spreadsheets that auto-populate with each other.

Additionally, the area's median home prices and rental rates continue to rise, offering investors excellent opportunities for long-term returns.