Thanks for the info. I guess I should consider malaria tablets. I did take them for about a month once, but I stopped, and I didn't bother on any trips after that. I'd kind of rather focus on not getting bitten, but I'll have to look at the current malaria risks. The stomach problems are off-putting, as well as the fact they do nothing for other mosquito-borne illnesses. Thanks for the reminders of hygiene vigilance - I know other people who have never been the same after dysentery. Will bring backup water treatment - good idea.
I'll look at other threads for multi-fuel stoves. Hoped never to need one, but it might make the most sense, particularly in Pakistan.
As for where I go, it depends on what happens with the Pakistan visa. I'll have a total of eight weeks, and I expect to split it about half and half between India and Pakistan if possible. I'll be going through any lowlands (Delhi, Lahore, Islamabad) as fast as I can, as average highs are well over 100* in June & July. In northern India, the town of Leh is about 11,500 ft. If I go there, a week-long trek I'd like to do starts at about 11,500 and crosses various passes, including three of about 17,000 ft. Camping would range from 11,000 to 15,000 ft, even in the valleys. Other areas I might hike in India are about the same or lower. In Pakistan, I think it will be rather hot in the valleys, which includes most/all of the communities along the highway. I should be higher up when hiking & backpacking. The hikes around Nanga Parbat would be up to about 13,000 ft, and another 4-5 day would start at around 9000 ft and cross a pass over 15,000 ft. Ditto just about all the other hikes. I don't think I'd be camping below 9000 feet. I just cannot find out what the average lows are for various elevations in that area. I was in the Sierras at 11,500 feet last October and it was just down to about freezing - can I expect the same in the Himalayas in June and July? Warmer? Colder? Windy? Stormy? Rainy? Wherever I do go will either be visited before the monsoon (starts late June) or be out of the monsoon path, so I'm hoping rain will be minimal. Just finding it hard to find real numbers and stats.
Thanks for the advice so far. I figured it was a pretty long shot asking.