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I think it ticks most of your boxes with the possible exception of its portability. However, Decathlon pop-ups usually come with straps so you can carry them like a backpack, although it obviously limits what else you can carry.
We have 6 man version of this but that might be a bit more expensive. ... i just love the flexibility it offers. ... porch included in the price but zips off so when we were festivaling last summer we just left that bit at home. ... its a lot of tent for the money!