I own a 12X14 Davis tent without a floor, a back window w/ the colorado flap. I have the internal frame poles made of one inch conduit, so if a pole breaks or is lost a replacement is at the local hardware shop. I love it. the tent itself I guess weighs about 40 lbs. I have a painter canvas drop cloth that covers 3/4 of the floor, so the entry was is dirt. This makes it nice to be able to unpack at the end of the day inside even when you are wet and muddy. The Davis tents also has flaps in the top of the gabble ends so it can also be set up using lodge poles. One person can set the tent up in about 20 min start to finish. Set up the A frame, pull the canvas over the frame and then lift it up to set the legs.
My buddy has a 14X17 montana canvas tent with a sewn in floor and a back door. The thing is a behemoth. The canvas alone weighs ~150 lbs and the poles are custom, so if one needs to be replaced it has to be order from the manufacture. With a sewn in floor, it takes one person over an hour to set up. You have to set up the poles from the inside and on a sunny day, you are a sweaty mess by the end. For this reason, he doesn't use it but about once every 2 years. The floor is nice to keep critters out and to walk around in socks but complicates the setup ten fold.
As mentioned below the montana canvas tent has a heat resistant silicon fitting for the flue where as the Davis tents have a fiber glass weave material.
I would recommend a Davis tent without a sewn in floor and get it big enough to have the space but don't go too big.