Sleep system & layers for Salkantay Trek in Peru

[Jeff LaVista]

I'm going to Peru in early April with my S.O. and will be taking the Salkantay Trek, it's a four day, four night trek plus a day at Machu Picchu. we have our trek booked and most of our other accomodations and considerations taken care of, and we are making sure we have our packing lists in order, wanted to see what you guys thought.

the climates will vary a lot over the four days, mostly within reason but maybe on the 1st day, and most likely on the 2nd day we will be sleeping at pretty high elevation and could be quite cold. I'm questioning if we have warm enough sleep systems, but also don't want to needlessly buy an alpine bag we will never use back here for 3-season trips in the northeast and lower east coast hiking.

for our sleep system, she has an REI Flash women's sleeping bag, and I am about to pull the trigger on one for myself (mens version) so we can zip em together. We both have the Klymit inertia X-frame mattresses that we really like, plus our guide's will accomodate us with blue foam mattresses each night at the campsites.

Her:
REI Flash womens EN Rated lower-limit 32*f and 30oz
Klymit inertia X-frame at "seems warmer than R1" and 8oz
provided blue foam mattress -at least R1 and no weight penalty
Patagonia Capilene 4 onesie – 11oz (I just bought these on closeout for $139 and they RULE)
possibly some down-booties tbd at 3-6oz

Me:
REI FLash (en rated 29*f) and 27oz
Klymit inertia X-frame at 8oz
provided blue foam mattress
patagonia Cap-4 onesie (130z)
possibly down booties tbd 3-6oz

is that going to be enough for the first two nights of our trek?

beyond that, we will each have a decent amount of hiking-clothing that we will need for the various climates we'll experience during out trek. we each have a polar fleece for hiking in, plus I have a patagonia nano-puff, and she has the REI cloudveil, just like my nanopuff. plus we each have a soft-shell jacket, and she has a smartwool merino pullover sweater to wear around camp. some of these items could potentially be wet from precipitation or

I also have an Enlightened Equipment Rev-X 20deg down extra wide quilt, it is slightly overstuffed at 24oz and seems to have about 4" of loft. It is big enough that It can cover both of our zipped-together sleeping bags – is there a way to calculate the warmth potential in doing that?

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