A great option that I've used for years is my Hilleberg Nallo GT 4 season tent. I have the option to use the tent, fly, footprint in super wet/snow conditions. For ultra-light conditions I use only the fly plus painters plastic. The 4 season Nallo fly is bomber-proof for extreme wind, snow, rain, etc. I've used the fly on several trips to Alaska with lots of rain. There also is an incredible amount of room! I like vertical walls, and lots of room for me plus all my gear. It's really nice having the flexibility of using all or part of the tent/fly depending upon the conditions.
I would also recommend a different pack! A 4800 cu in pack isn't squat for packing out game! Most 4800 packs also aren't designed for hauling loads over around 30 lbs. A larger volume bag will likely save you a trip or 2 for hauling out large species like elk! I can also toss in my large volume bag a load on my first trip out. You will likely find that a pack/frame similar to Kifaru or Stone Glacier may weigh slightly more but will be a lot easier on your body than your current pack with a light or heavy load. Plain and simple, you will be able to handle a lot more bulk and weight! I use my giant kifaru while scouting and merely cinch down my load. If I had my spotter, tripod, etc in a smaller pack/frame my shoulders and back would be a lot sorer at the end of the day!
Larger bags don't necessarily mean heavier weight. New materials are super strong and light. You can also cinch down your load super tight when not fully loaded. Anyway, I really would consider a larger bag with a frame designed for 100 lb+ loads......your body will thank you!