Zulus - Member
I used a pair of Scarpa Manta boots when I went
Jayzus no, Mantas are crampon compatible and stiff as hell. And heavy. Utterly pointless and far more likely to cause blisters. For perspective, I trekked the Annapurna Circuit and the Sanctuary in a pair of Merrell approach shoes. I'd just go with lightweight fabric boots or trail shoes, whatever you're more comfortable with. It may be high up, but the paths are generally pretty well surfaced. And yes, I've been to Everest Base Camp as well.
Other stuff? Down jacket is great for cold evenings hanging around in tea houses. Warm sleeping bag, it gets chilly up at Gorak Shep. I found one of those bottles with a built-in filter handy, but you can buy boiled water and hot drinks at numerous tea houses along the way.
I had no gut issues at all. Take some alcohol-based hand-sterilising gel and use it. Purify water or consume hot drinks - don't ever drink direct from a stand-pipe or tap - food in tea houses is generally fine and seems to be safe.
Acclimatisation is a weird thing. It's nothing to do with fitness, some people acclimatise well, some don't. Organised treks will sort your schedule safely anyway, or ought to, if not, have a look at the Trailblazer series of guidebooks which are excellent for specific and general advice and include itineraries for safe acclimatisation.
If you can, I really recommend walking from Jiri rather than flying into Lukla, it's better for acclimatisation and although it takes around a week longer, it's quite different walking below Lukla than above it and, quieter too, gives more perspective - it's where the old Everest expeditions used to start from.
Lukla's a bit of a hair-raiser, but not that bad in terms of accidents. Plenty of people fly in and out without dying.
In many ways, it's not so different from walking in the UK - same kit mostly just with an added down jacket for the evening. You shouldn't have snow, but it happens occasionally. Trekking poles if you like them, I don't.
Anyway, great trek, lovely people, but don't wear crampon-compatible winter mountaineering boots. It's a really pointless exercise