First off, I'm not opposed to spending lots more on gear if what I already own doesn't seem like it will work for me :)
I'm pretty skinny with not much of my own insulation.
I plan on taking a solo MLD Patrol Shelter. Also own the GG "The One" but due to weight would rather not bring that one.
Would prefer no bivy to keep weight down and allow body moisture to escape sleeping bag faster.
What I already own – manufacturers estimated weight
WM Summerlight bag (32F) – 19 oz (10 oz fill)
Montbell Mirage down parka – 12.8 oz (5.3 oz fill)
Mtn Hdwr Ghost Whispr hoody – 7.5 oz (2.8 oz fill)
Melanzana micro grid hoody – 12 oz
Pants: Columbia Global Adventure II – more sun than wind proof. Light and comfy – 9.6 oz
Pants: Arcteryx Gamma LT Hiking – 10.1 oz
Montbell UL down pants – 7.7 oz (2 oz fill)
Merino and cap tops and bottoms, warm hat, synth OR 150 gloves, merino Buff…
I use the following days already cleaned and dried hiking socks as sleep socks. Planning on only 2 pairs socks & liners.
About my WM Summerlight: It says it's rated to 32 but I feel like I'm uncomfortable way before that. I'm guessing that point comes around 40-45F. Bag is not dirty it just doesn't seem to fully loft. I'm considering sending it in over the winter and having it overstuffed with 3-4 more oz. Right now, I'm using a Big Agnes Q-Core SL R:4.5. I will buy a new, lighter (and less insulating and less comfortable) pad soon. Considering Z Lite because I feel I have to, but also the Neo Airs and an Exped Synmat Hyperlite (or Winterlite) w/ some sort of thicker ground cloth or thin foam to use as puncture protection.
I'm not opposed to the idea of using wind pants as sleep wear and ditching long underwear bottoms, though I've never tried it.
A bunch of the down items listed above are pretty new so I haven't had the opportunity to test out various sleep combinations.
I know lots of people rely on the Ghost Whisperer for sleep and in camp use. I would never hike in the Mirage, but I feel like it would drastically improve my eating, sleeping and break periods during chilly weather compared to the GW. It seems like it could be a better solution than buying a bag rated for the coldest temps anticipated and only carrying the GW as jacket insulation.
Bringing the down pants seems like an excessive amount of weight for only 2 ounces of down. Maybe just have the WM Summerlite overfilled on the lower half?
Switching out gear at a couple different points along the way is totally cool, too. Just not sure where.
Like I said, I'm not at all opposed to buying a different bag/quilt. If the Zpacks 20 is the most comfortable answer, so be it.
I'm still in the process of crunching numbers and trying to figure out what to do about a sleeping pad since I'm a lifelong side sleeper, but maybe that topic should be saved for another thread.
Thanks in advance for any input!

