Luckily our shoe sizes were close and an ample supply of Thorlo Socks were great for compensating the rest. We were also short on certain gear necessities to make our trip work out. Katmandu, to our pleasant surprise, could fulfill all of our camping needs. All one has to do is walk around the old part of town, called Old Thamel and ask about renting whatever may be needed on your trip. For items such as tents, stoves, pads and Gore-Tex clothing, I would recommend renting these in the capital.
Prices can be amazingly cheap.
A good sleeping bag went for a dollar fifty a day. I might also add that there is a thriving local sleeping bag and accessory making industry in Katmandu. However, if you are traveling through Namche Bazaar, there is no sense in carrying all of your technical climbing hardware to that point. We found all of the needed items which some of our party was missing such as crampons, ice axes, ropes, ice screws in Namche itself. We even credited the trekking poles we were carrying towards the gear rental fees on the way back.