As a co-host for short term rentals, you may not need a license as long as you're not crossing over into activities that could be considered brokerage activities like handling any contracts, collecting rents, doing any accounting, approving tenants, etc.

Equity from sale can go to the new property AND a DST/TIC tax free as long as I have at least a mortgage/debt of 225k on that new property?

As long as the ADU is under 900 sq. ft. and meets the state building code, there will be no variance or special permit needed, so no ZBA or neighborhood meetings.

As long as you have the insurance liability, property and flood if you are in a flood plain.

The current owner is letting me take over the property as a tenant as long as I pay the water bill and the mortgage payment on it and whenever I decide I can purchase property for the balance of the mortgage  they are in no hurry for me to purchase the home as long as the mortgage is paid. 

That does not require employment or job seasoning instead it uses the rents to qualify and you can take out up to 80% LTV cash.Use the cash to put down on the next 1-2 or more properties as long as the other properties are debt servicing themselves it opens up more opportuities to buy more future assets and increase your passice income.  

As long as it stays optional to the tenant I don’t have a problem with it.

LTV & CreditEliminate the emotion and treat this like the business it is.In my opinion it does not matter who the borrower is as long as they have a track record of ATR (Credit)And I feel comfortable with the leverage (LTV)

You can do any strategy you want personally so long as the market data supports a 1:1 under STR, MTR, or LTR income strategies.

Some may be comfortable with 100% crypto transactions, while others could opt for a split between cryptocurrency and cash.For sellers unwilling to receive cryptocurrency directly, the digital asset will be converted to dollars to complete the transaction.There are many ways a buyer can use crypto to make a purchase:The simplest way is a Crypto to Crypto transaction, as long as the seller accepts cryptocurrencies as payment.