If I'm already in the 20-24% tax bracket, what would be the best way to grow 100k-300k while minimizing the tax burden (while keeping it somewhat liquid)? 

I'm sure any IPO plans will now be delayed to when markets recover.I have finally made some money on stocks.

This is going to be a bumpy ride for a couple of months3) Currently you can pay cash for a house and then do delayed financing. 

I’m just closing on my third SFH rental using a traditional buying strategy and will be all BRRRR going forward.If doing BRRRR deals, aren’t you essentially recycling your capital again and again therefore minimizing new expenditure?

Just considering the options above, if you go delayed financing you'd still need to go to a bank that will qualify you otherwise you're money will be tied up in the property.

Keep a sell order at ~90-95% of your investment to minimize downside risk.25-40% in state and municipal bonds.

For people traveling to Orlando to go to the parks this summer, I have to think that a lot of them would rather stay in a vacation home than a hotel to minimize contact with others.

Would minimizing your personal debt, therefore lowering your monthly payments, therefore increasing your saving potential, be the right move for your overall position, before moving into real estate?

I get it - government offices are closed and that causes delays (despite some government employees working from home - my dad's dealing with that nonsense now - people giving us damn fax numbers instead of phone numbers - ugh) though throwing a quarter-of-a-year extension out there is too extreme. 

But, in my opinion, that’s a moot point.Based on what you wrote, it’s not your private lender’s fault at all the deal got delayed.