Aswan High Dam shouldnt be a problem; you'd get there by road and then its a flat walk across. Dont go too late in the day as the dam itself closes and you will not be allowed on it (it is heavily guarded by soldiers as a potential military target).
East Bank Temples - Luxor temple is probably straightforward and relatively compact; Karnak is a huge complex, so you'd probably want to confine yourself, say to areas close to the entrance e.g. the main colonnaded area. The town and some market areas you could probably view comfortably on a horsedrawn carriage if you can get up to the seat (very c heap if you haggle).
West Bank - spread over a very wide area, presumably you are not including The Valley of The Kings. Easy to go by taxi to a couple of the funerary temples and get the taxi to wait. Dont even think of going by donkey! The temples are full of space, so you won't be hemmed about with people. Temple of Hapsetshut is terrific but there is a long ramp up. Sure somebody would give you a push for a bit of baksheesh.
Although you can get to the Valley of The Kings by taxi, each tomb is entered by long flights of stairs. Tutakhamun' s is the most accessible from that point of view as it has much less in the way of stairs. Tuthmosis 3rd also has a steep climb to get up to it.
Felucca is traditional Nile boat. A doddle and very relaxing if you are able to get in and out of the boat (might be a bit tricky if you have poor balance; you might need to cross a plank for example to get onboard).
Philae temple - road journey to, followed by very short boat crossing.
Kom Ombo - a relatively minor temple as I recall, seem to remember walking a track through reeds to get to.