Could be lighter on the zoning and building code requirements. 

Then weight the pros and cons of each market. 

Cover the cloth with plastic wrap, weighting it with a book if necessary.

(If the image doesn't display well, you can also find the chart here)I also made note of various helpful reviews (many from BP):LifeProof +s: "best overall," "easy to install, great value," LifeProof -s: "tabs break during install"TM Allure Ultra +s: "held up great"TM Allure Ultra -s: negative reviews on houzz, subfloor unevenness issuesSmartcore Ultra -s: negative reviews on houzzNuCore +s: "great over imperfect subfloor"NuCore -s: "shouldn't be used in wet rooms"DuraLax -s: weight limit and issues with area rugsMohawk SolidTech -s: lots of bad reviews on floorcriticsCoreTec +s: great product at great priceI ended up going with CoreTec ProPlus since I found it on sale for $2.50, and I'm actually not very happy with it! 

Tankless being smaller and lighter can be installed in attic.  

Typically these windows operated with a series of weights that are located under the trim and roughly 4” to the right and left of the windows.

Is there a rickety old deck that could collapse under the weight of 4-5 housemates and their friends?

On chairs, you’ll need to look at weight limits, because I’ve seen a lot with a low 225 lb limit.  

I'd weight the options of high EMD with an inspection contingency so my money isn't at risk, and low(er) EMD with no contingency and I could lose my money.

The limitation depends mainly on the price and weight of the vehicle.