How long are you planning to take? Are you going solo?
The gross weight of the 220g fuel canisters is around 12 oz, not the 8 oz you have listed. However, unless you're going slow and cooking a ton, you'll probably be fine with the 4 oz canisters (...segue to resupplies...) which you can restock at Red's and MTR, which are the two resupplies I'd suggest for a < 20 day trip. Convenient, *almost* on trail, and delicious hot food at Red's. I've heard good things about VVR, so if you're not hurrying down the trail, you might resupply there instead of MTR.
Clothes look good, but I'd add a pair of dirty girl gaiters to your list, especially if you're hiking in shorts.
Maps? I know you can do without on the JMT, but I recommend Erik the Black's JMT Atlas. Or of course, the Tom Harrison maps. Single sheets, so you can ship the pertinent sections to your resupplies and only carry a few sheets at a time.
If you left the cooking gear and stove at home, you'd save around 24 oz. Sort of depends on if you're solo or not, but if I were going alone, I'd save the 24 oz. There's hot food in Tuolumne Meadows, at Red's, at VVR, and at Whitney Portal. Personal choice.
Is the Bearikade Scout really 13 oz lighter than the BV100? Well, consider that. JMT through-hikers can get a good deal on the Bearikade rentals directly from Wild Ideas.
You can read my lengthy JMT trip report for last year. I discuss our gearlists, resupply tactics, etc. The report is here . Be warned, it is not short. If you do dive in, I suggest downloading it instead of viewing it in the Google Docs viewer, because it screws up all the colors.