Lots of other liabilities while lending out your car without proper legal work.

I know a 1031 is still possible under the installment sale, but honestly I don't see the seller going for this with its extra complications.

We had planned to renovate the entire place ourselves.List of violations:properly repair with similar material the broken or defective sheet-rock at east wall inside base cabinets in the kitchen located at apt 2fl, 2nd storyproperly repair with similar material the broken or defective ceramic tiles floor in the bathroom located at apt 2fl, 2nd storyproperly secure the loose base-molding at walls in the 2nd room from north at west located at apt 2fl, 2nd storyproperly repair the broken or defective counterbalance at upper sash south east window in the 2nd room from north at west located at apt 2fl, 2nd storyproperly repair the broken or defective counterbalance at lower sash south window in the kitchen located at apt 2fl, 2nd storyreset, so as to secure a proper and tight connection, the water closet bowl .."

High velocity could work but you need the correct ductwork size (installed by someone with HV experience).

We had planned to renovate the entire place ourselves.List of violations:properly repair with similar material the broken or defective sheet-rock at east wall inside base cabinets in the kitchen located at apt 2fl, 2nd storyproperly repair with similar material the broken or defective ceramic tiles floor in the bathroom located at apt 2fl, 2nd storyproperly secure the loose base-molding at walls in the 2nd room from north at west located at apt 2fl, 2nd storyproperly repair the broken or defective counterbalance at upper sash south east window in the 2nd room from north at west located at apt 2fl, 2nd storyproperly repair the broken or defective counterbalance at lower sash south window in the kitchen located at apt 2fl, 2nd storyreset, so as to secure a proper and tight connection, the water closet bowl .."

Am I thinking this through properly?

So if you wanted to sell the investment after time and use this as your primary & house hacking until ‘dream home’ days, you could sell and pay off the original loan balance and go this route or pay off original loan amount without selling and keeping it and apply for the one time benefit restoration - which is not the same as entitlement re- installment for active/permanent change of station orders or foreclosed upon properties. 

-Provide and install a stone counter top.

I am currently paying around $330 per window installed in St.

For example, many people, even here on BP, will claim every deduction under the sun (e.g. they installed new windows on their primary home) which "might be possible" for your tax return.