I wasn't sure if your post was asking just about this bag, or about warmer options. I'll share what I use anyway, talk is cheap.
Hopefully it helps you/someone else.
I use an Outdoor Vitals 0° bag in winter, the "Long" one. I'm only 6'0 but I've found it a bit oversized so I imagine it would work for you. In warmer weather I use the same bag in the 30° option. (If it's too hot I just open it and sleep on top.)
I also carry a 2GoSystems "V3 Trifecta Bivvy". They seem to be sold out right now... hopefully they come back because I'll definitely get a second one for my wife as soon as that happens. This thing is great. If you add it to a sleeping bag as a bivvy it both makes your sleep system waterproof and adds easily 10° to your range. But it also doubles as a waterproof, heat-reflecting tarp so I don't need to carry a tarp separately.
Between these items my whole sleep system runs between 3-4lbs. In warmer weather when there are no snakes/bugs to worry about (yes, I'm afraid of snakes) I can just sleep under the tarp and I'm done already. If it's colder or I don't trust where I am, I use a Forest River 2-man tent (I like the extra space) that only adds another 3lbs. In EXTREMELY cold weather, I just add a pair of Mega Warmers, one at my feet, one near my shoulders. They're cheap and effective, and a fistful of them only adds a half pound or so.
It's a great system that works for me. YMMV.