As far as any prospective tenants in the future and smoking, I would advertise 'no smoking indoors - vaping allowed.'  

driveatank.com or indoor trampoline park

Lot's of more red tape to get through because a project of that size will cause ripples into other areas so they scrutinize it heavily versus smaller projects that tend to fly under the radar.

Due to the age of the system (16 years outdoor unit) (11years air handler) and the current EPA phase out of the old r22 refrigerant I recommend the heat pump system be replaced.”Neither company is willing to replace any parts on the unit due to the age and not being able to warranty them.Here is the scope of work for the price of $3750Install one new indoor air Handler with 10kw heat strips,Transition duct work to fit the new air handler,Install outdoor heat pump,Connect all high and low voltage wiring to indoor and outdoor units also to the thermostat,Install in-line PVC P-trapClear PVC drain line,Evacuate system and charge with refrigerant,Check/test system.Install Honewell digital programmable heat pump thermostatComplete system install will come with a 10 year all parts and labor warranty.What do you experts think?

He also will warrantee  the HVAC but i can't do business with the unit indoors.  

There's really no greater risk of a fire with a normal indoor smoker vs the one with the tenant on oxygen in it.Now if you want to go with a no smoking policy then do it, but I wouldn't justify it (to yourself let alone them) that you're in some way making things safer/better.

I spray April & Oct. never see bugs after that.https://www.menards.com/main/outdoors/gardening/animal-insect-controls/home-insect-control/ortho-reg-home-defense-max-reg-ready-to-use-indoor-perimeter-insect-killer-1-33-gallon/0221500-0196910/p-1444453641200-c-14245.htm?

Also a contractor said the HVAC unit  is not enough to  provide for that extra area  so I'd have to get a wall mount indoor unit  but that sounds really  tacky to me.  

We found a great property which has about 1.1 acres, 11,000 sq ft indoor storage, office space, and plenty of outdoor storage for cars and truck parking.  

Just some of the features include...  7+ Bedrooms, 4 Full and 2 half bathsHuge master suite with a second bedroom suite on the other end of homeLarge indoor pool with 1,000 sqft green houseHuge kitchen with large fireplace2 story Great Room with huge fireplaceLibrary with fireplace, dining room, office, huge laundry room on 1st floorBasement with fireplaceSeparate 4 car garage with covered walkway to main home with caretakers quarters aboveStorage BuildingThe property estate is divided into 2 parts.