I think if you plan on doing a lot of touring and or camping with your tent you should get a 4 season tent, 4 season tent will hold up better in the event of a severe wind hail rain storm that could tear a 3 season tent to shreds.
Terra Nova makes a 4 season tent called the Blizzard 2 tent (2 meaning for 2 people); pack weight is 4 pounds 8 ounces, and the price isn't bad at $335. The tent may be a bit heavier than some 3 season but you can make up for that weight by going with a very light weight SOL sleeping bag like the Escape Bivvy bag, or the better Survive Outdoors Longer Escape Bivvy 8.5 ounce bag both of which pack down smaller than any other sleeping bag, the Outdoor one is made more rugged so a person could sleep outdoors by itself for longer periods of time, these bags can't absorb water either like filled bags, and the most expensive one is just $60. And a nice lightweight highly packable mattress like the Thermarest Neoair Camper which only weighs 30 ounces.
Anyway all of that is just my opinion of course; I do use the tent, and the Escape bag, as well as the Neoair mattress and so far after 3 years of weekend tours they're holding up fine.