Carl
Level 15

Deductions & credits

This is why my financial advisor suggested getting input on the tax implications.

Just wondering why a financial advisor would suggest getting input from other sources on tax implications. I would expect a financial advisor to be up-to-snuff on that themselves.  Maybe you should be talking with an estate planner or someone well versed with estate taxes/retirement accounts.
If it were me, I'd do a 15 or 30 year mortgage and then consider paying off that mortgage from the retirement account at age 65 to 72.  Remember, at age 71 1/2 you are required to start drawing from an IRA or 401K.  Of course, that would depend on the performance of the account. Overall, I bet an estate/retirement planner could come up with something more advantageous than what I would consider. Especially if your state taxes personal income.