I just don't want to sink all my cash into one property that may not be eligible for refinance, so just trying to educate myself on all my options.Thank you!

Here are the rules broken down independently... a) Your VA Eligibility is like a rechargeable battery. 

Does anyone know if this is eligible for 203k under one loan?

Shoot me a DM.To be eligible for another FHA loan at this point, you would likely need to be: relocating (moving to a new community that is not a reasonable commute’s distance from your current primary residence), working through a divorce situation with a co-borrower, or your family has increased in size (family needs more room in your house because you had a baby etc). 

Is your VA entitlement (Certificate Of Eligibility- COE ) tied up in any other property right now?

Ok, I'll take you on that. 6% MPY note.Some markets will still fall, but fundamentally housing will be the most premium market once we get out of the peak fed funds rate environment (still not there).

I am having a hard time understanding your first question.You don't get a tax deduction from the IRS.If you are entitled to write off an expense, it should be eligible for 100% write off on the return.Whether it offsets your other forms of income(such as W-2, Interest, Dividends) will depend on factors such as your income level and/or whether you can claim real estate professional status.A CPA that specializes in real estate taxation will have a better understanding of real estate tax laws that may benefit you for your 2022 tax filing(or a future tax filing).Best of luck

I'm not talking about the entities that buy/sell one or two deals and year but rather those that use these methods as their business model thinking they are eligible for installment sales treatment.

You're eligible for the exclusion if you have owned and used your home as your main home for a period aggregating at least two years out of the five years prior to its date of sale.

A CPA can help you understand your tax obligations as a rental property owner and identify any deductions or credits that you may be eligible for.