peter's looking at that boot list, and i am a VERY boot centric kind of guy.
but HOLY MOLLY ! that's some collection of extremely stiff'ish boots dear. you won't be able to actually walk any kind of distance in those things.
boots are for to protect the feets from what's outside the boots. but when they get too much stiff, like what you have there, you are going to find that the very boots themselves will consume the flesh of your feet. i Know Waaay too much about this.
so: here you are on BPL, and if you had a ginormous pack, and it was giving you an very short stride, you'd be able to get away with those kind of boots for ... a few days (at most), before they ate your feet.
you could work on a construction site for months though and never have an issue. but back to your pack weight.
as a BPL'r, you will have a sweet gossamer light pack, and thusly a long and attractive stride. this will make your feets bend a Lot, and this bending will increase the angle that the boot needs to bend. except .. it won't. it will pull down back off your heel, relentlessly stripping the meat off of it. this will hurt. but use that "determination" off the thru-hike forum, and it will bleed too. eventually, it will bleed and leak, and you'll stop whether you want to or not. and it may not heal correctly.. EVER.
yes .. EVER. you'll not have real skin back there the rest of your life. trust me.
you'll dork around with different boots trying to find something that will be both gnarly and not wreck your feet. look away luv, it is not to be found. you can not have this stiff un-natural thing bolted to your foot and expect (well, you can expect, but it won't help any ) it to bend normally in a way that you can walk over time/distance.
the less boot you can get away with, the BETTER.
less boots = good. (is very simple)
Roger C will tell you that you can snow walk naked in tennis shoes. and he apparently does this quite successfully, as does his wife. he's really good at it too ! i suspect RC is right about this.
peter is not so determined in the direction of light footwear, and though i recently walked 300m of sea ice in cheap wal-mart caca tennis shoes, i am still not liking it so all that much.
on to more reasonable boots. - crampons need not be step-in to work safely. i have used regular old big fang'y spikes with scottish straps on lighter boots, and they were splendidly solid feeling. splendidly hooked up dead solid. crossed ice chutes with glee. no problems.
for this trick i was using nothing more than LL Bean cresta half and half leather/fabric boots. easily an all day walker for people like me, and STILL too much sole for the uppers to handle when wet. you can trim more off of them and still be on the safe side.
so that's peter's op. less boot is more comfortable. more boot, is a shorter trip going to make. guaranteed.