This is an equipped to survive forum. Consider your tent serving you in unexpected and extended bad weather. Consider the role of your tent in providing privacy and some visual security in trying times and conditions.

Borrow a tent or two and get some overnight experience, even if it is in the backyard. Try out all the in-tent activities you can reasonably expect in bad weather.

Form should follow function, not function making do with form.

All backpacking tents become too heavy and small some of the time, and too light and big only once in a great while. Almost all "tents" come in several components which allow the load to be spread to several hikers' backpacks.

If your routine in-tent activities touch the tent, you will harvest condensation and have wet gear.

1-person tents are okay for gear; 2-person tents are okay for 1 small person with little gear; 3-person tents are okay for 1 person with a reasonable amount of gear or 2 persons with little gear; 4-person tents work well for 2 people and their gear.

Extra-large vestibules at each end of a tent, with complete ground protection / footprint flooring, and more vertical tent walls, bring tents more in line with their manufacturer people-rating.

Sit upright on the living room floor and measure head height, measure full extension to the side of both arms, lie down and measure your full body length plus the width of your loaded pack. Where are you going to put your boots overnight? If you need to use your stove inside, where can that safely be done? What other activities will you pursue that result in more gear and storage needs?

Hope for good weather.

Edit: If MEC is like REI they will be happy to let you set up and try tents in-store, including supplying you with a backpack or two stuffed to full size with foam blocks, a pair of boots or two, and whatever else makes sense to you. They also would rent tents relatively cheaply so you can try various models in the real world.