I will have 2 years from when I move out of old home to decide if I need to sell to avoid capital gains or just keep it for ever. 

Presumably with this deal, you are only on the hook for a 30 year mortgage, not forever like a timeshare, but HOA fees can eat you up just like the timeshare did.Any deal pitched as you get to use it and it ONLY costs you the same as a vacation somewhere you might want to go a few times, but not every year for 30 years, I'd recommend you run.

My goal is to purchase our "forever home" seven years from now and use my cash flow from my rental properties to pay for this "forever home," which will also have a 15 year mortgage on it.

@Paul RumoloIt looks like you already got some solid advice.First you need to determine if your rental activities will increase your taxable income.If they will increase your taxable income - you may be required to make additional estimated taxes to the IRS/States.You can do so by making quarterly estimated payments or ask other sources that already withhold on your behalf to withhold more.For example - if you work for an employer and they withhold $500 for ever $2000 that you make; you can ask them to withhold $600 instead of $500.Obviously - It may be hard to calculate by yourself - you may want to reach out to an accountant for a more precise answer based on your specific scenario.

there is definitely a benefit to holding onto properties forever, but you can accelerate your profitability and return on the original investment much faster if you sell those properties and exchange them into a profititablemulti family in a growing market

For instance I do not intend to stary in this property forever so a new refinanced mortgage made more sense to me.

Unfortunately for my Under Market Tenants in WA State I will have to move Rents Closer to Market early in 2023 or Forever be locked into Below Market Rates.   

At least not forever.

While you've determined that your current career path isn't what you want to do forever, you've invested a lot of time/energy/money to get there. 

I love these for my nicer houses  I don't plan on holding forever or houses that need work I don't want to do.