Hugo at Quality Seal Roofing has been my go to for the past 4 years. 

I know how to generate motivated buyers, I know how several ways to find distressed sellers without spending an arm and a leg on marketing, and I know how to get in contact with a title company to help seal the deal.

For air conditioning in this scenario, you could install a ductless heat pump if there is sufficient demand.Regardless of your choice for heating system, you will get your best bang for your energy efficiency buck by improving the building envelope (air sealing, additional insulation), which may necessitate the addition of a ERV/HRV to maintain air quality in a tighter building ... but it may also allow you to use a smaller boiler/furnace to condition the building.

honestly, I would install carpet instead of laminate if that were my only 2 choices. the problem with laminate regardless of price is that it is made of essentially compacted fine wood fiber, like cardboard, and the edges are not sealed, because of this, generally on the butt end, any small amount of moisture will cause it to swell.

@Brian PloszayThe attractiveness of natural gas over electricity is location dependant - there are places where it is not significantly cheaper.Regardless of the fuel source for you heat, your best bang-for-efficiency-buck comes from air sealing and insulating the building envelope.

5 years is a bit of roof life left.I would suggest getting a roof estimate and talking to the roofer about the condition and options for when it is time to replace.It may be in good shape or may need sealing around nails that have worked their way out of the wood some.The roofer may give you some guidance for what to look for to guage when it is time to replace or do annual maintenance until it is time for that.

which is superior for sealing urine odor? 

The house is 100 years and original electrical..and found some foundation issues...all windows except one are sealed shut...for your safety she told me today...I was like really now...the house it made of that lighternot..not sure of spelling there.. but has joked that if it were to ever catch on fire to run...I by no means want to cause trouble , just feels so unfair ,knowing I've got craniotomy (brain surgery in a few weeks) so why make me move if house was took down off market at all...idk..just very aggravating ordeal...I know all that is not her problem but never dreamed she would do this...she's been one pushing me to go thru with it and now it's at point where I have to..can't put it off...but thank you for the advice.

@Codey FabianThat basically seals it for me. 

The simple answer, without getting into building science too far, is that you should have an insulator use a small amount of spray foam to seal the attic at the ceiling level, to prevent air from going in and out of the house, then blow in insulation on top of it.