I got the new Osprey Exos 58 last month and used it for a winter trip to the mountains just to see how it handled a heavy load. I carried a gallon of water so as not to have to melt water as it was storming (the reason for the trip to see how a tent would do in it) and I did not want to melt snow. I had the pack stuffed and was at 40 lb starting out. That dropped a bit as my shells had to go on immediately.
The 3700 cu in pack, which weighs 2 lb 9.8 oz for my size Large, handled the weight very well. I am looking forward to getting some long hikes with it later this year. It may work for you.
As far as tents go I have a Tarptent Squall which has the netting and floor and weighs 2 lb 2.1 oz. It has a lot of room and I have had it in a snow storm, although I do not recommend it for that. If you do not use trekking poles you will need to add for some tent poles.
As I prefer a free-standing tent I paired a BA Seedhouse SL2 with carbon fiber poles and Ti stakes to give me a 2 lb 15 oz total package weight.

