If you sell it, you get $250k single / $500k married exemptions from capital gains.Speak with a tax professional about how much you'll save in taxes by doing this. 

Are there any tax implications or considerations for Canadian investors investing in the U.S. through an LP?

Often times you will pay much more in taxes than if you pulled the money out, paid the taxes and penalty and then started investing in real estate.For example, with the financing you mentioned, the IRA must pay taxes on the portion of the profit earned by financing. 

I'm in the market for entity config and tax planning/prep.

You’ll have 45 days from your sale to identify them and you’ll have to buy enough of them, and only them, within 180 days of your sale to meet your 1.1M requirement, or face taxes.

If so, there are no transfer taxes due. 

So all of the gain and depreciation recapture are initially still tax deferred.However, like Joe said, the down side is later when sold  you lose the 1031 option. the client will pay tax on all gain and depreciation recaptured from before the 1031 also. 

Will the title company put this property under our LLC name, and won’t be required to legally inform HUD/tax authorities. - will it influence property taxes once we move to conventional loan in 3 yrs? 

I find that it's almost a one stop shop in that I can use it for my business checking and savings accounts, bookkeeping, for rent collection, I can issue virtual credit card, I can create all the financial reports I need to run my real estate business and prepare for tax filing and through their partners I can vet my tenants, develop state-specific leases and more.

Taxes 10k HOA is 9k The current owner never did short-term rentals.