OT a bit but will you be everesting on your recumbent? I know practically nothing about recumbents but I thought they were a bit less than optimal for going uphill. I'm probably wrong, I usually am.
I have a half formed plan to attempt to accumulate half an Everest's worth of climbing in a single day. A whole one would be way beyond my powers. And doing it on one hill doesn't appeal.
Yes I'll be doing it on my recumbent.
You are making the same mistakre many make when it comes to recumbents. Would you say that a butchers bike would be optimal for Everesting? You see a butchers bike is the same as a road bike if you consider them in the class of upright bikes. It's the same with recumbents, there is a lot of variance in their design, weight, stiffness etc.
My recumbent is a racing one, and though it's not pushing the UCI weight limits, it is the same weight as my road bike. For climbing it's about how much power you can get to the back wheel, and weight. For recumbent that's translates to, how light is it, and how stiff is the frame for the power transfer, and are you adapted so you can generate the power? Once adapted to a recumbent you put out just as much power as a road bike. Climbing out of the saddle will not help you be faster on a road bike. You can do that for a few hills but it's not sustainable over the height of Everest. So it comes down to what power you can sustain uphill, when seated, over 88848m of climbing. Given those parameters a racing road bike and a racing recumbent are pretty evenly matched.