In reply to purplemonkeyelephant:
I use 75mm duckbill lundhag boots with liners from plastic down hill boots, rottafella bindings and asnes skis. Baffin will be colder than Scandinavia where I pulk-pull so Sorrell or Baffin boots and icetreks sound good. Baffin make a 75mm boot which would mean you could use rottafella bindings which are bomb proof but I've never used them so couldn't comment on durability or size. I don't think lundhag make the 75mm boot anymore. If you go for lundhags, watch the sizing. Alfa also make a 75mm boots called polar advance which might be suitable as well as a range of less knarly fjellski boots.
I found NNN bindings had a tendency to freeze up. There pretty ubiquitous now though.
I think plastic ski boots (NNN or 75mm) would be painful after a while with a pulk.
Whichever boots you chose, go for vapour barrier socks. Needle sports do a good pair.
Oslosportslagen.no would be my outfitter of choice for Alfa, asnes etc. They knock off the (hefty Norwegian) tax and do good sale after new year.
Asnes skis take full length and short kicker skis. You'll need these with a heavy pulk outside of gentle down hills in perfect conditions. Wax or wax less won't give you the grip you need. The Amundsen model is the default expedition ski. They do wider models which would give you some float in deep snow and a bit more control. Take spare skins and check glue before you leave. Tents are not a good place to re glue skins. Some people screw and glue them but get advice from asnes as the screw hole could let moisture into the ski core.
I take snow shoes too. Mine have crampons which is useful in ice or on steep downhills where my skiing won't cut it. They're also good in melt conditions or where the snow is patchy. I'd take spare ski bindings (and pole) on a longer trip.
Braemar mountain sports are very helpful, as is snowsled
Sounds great, have fun.
Post edited at 13:32