How hard you should push depends on if you can afford a vacancy in one or all of your units right now. 

Currently rents for $4300 but plan is to BRRR and turn some or all into AirBNB as it is located right next to a major hospital.  

No one is saying don't invest or all Bros are stupid, people are missing the obvious sarcasm built in because it touches a little too close to home, it's just that Bros need to chill before overspending on the advice of a couple Bros on the internet who want to sell them a course on how not to be broke.

So you may not be entitled to some or all of the matched portion if you were to drain the account.

You can pay any or all of the borrowed amount back any time and then borrow it all again, just like a credit card.  

For instance, inadequate/improperly designed water diversion systems can cause major problems (e.g.; rot, masonry degradation, foundation settling) that won't emerge for several years.

I can then refi most or all of my money back out.

Here is my list of comprehensive items to account for when evaluating an investment: 1) Mortgage2) Mortgage insurance (PMI or MIP) or FHA Risk base3) Property Taxes4) City Taxes5) HOA (Home Owner’s Association) Dues and Fees and Assessments6) Insurance Property Hazard InsuranceFlood InsuranceEarthquake InsuranceUmbrella Insurance7) Vacancy Rate (usually 8% - the equivalent to one month a year, or 5-6% if multifamily and/or if experienced, if not use 8%)8) Utilities (you’ll have some or all of these if your tenant is not covering them and/or during vacancy) Water § Sewer § GarbageElectricityNatural GasPropane9) General Maintenance (usually 5%) Upkeep § LandscapingSnow removalRepairsNew Appliances10) Capital Expenditures (usually 5%, higher is the property is old and obsolete, less if fully rehabbed and all mechanicals and roof are new)11) Property Management (8%, even if you self manage, your time still has value and there might be a time when you'll want to be completely hands off or you'll not be able to do it, vacation, retirement, etc.)

While it may take longer to refinance out part or all of your original investment, I would argue that's not the worst thing in the world.John

The key thing is to not let any one or all of these things make you desperate.