If you can get your hands on an older REI halfdome 2 tent, that would be a good match. Its under 200 dollars, around 4 lbs, good for 2 people. They redesigned it this year, and unfortunately all the ratings say it was a redesign for the worse, so you're better off trying to pick up one used. In lieu of the half-dome, theres also the kelty gunnison 2.1
Edit* hmm out of stock. But I've seen em elsewhere similarly priced
Fits your criteria, as its under 5lbs, under 200, and very very spacious, even for 2.
But I agree with others, that if you can expand your budget a lil, I would get a Tarptent double rainbow. Saves you from having to upgrade later. You can probably find one cheaper if you watch/post in the gear swap. Good luck!