Yea I do too, Go the compressor route and the plugs. The CO2 cartridge route will fail you, they leak off over time especially when exposed to heat like in the bottom of a saddle bag over the exhaust. Cyclepump makes about the best pump but others such as the one he posted a pic of will also hold up. Your looking for one that is lightweight yet delivers good volume. Just air it up and give the pump a cool off and finish airing up. Leave the bike run while you air and shorter and heavier wire is best.
Im going to say your best kit is self made. Include the tools to remove the valve stem, extra Valve stems, extra cap (With seal inside) heavy duty Plug tools (Cheap ones don't work so swell on a bike tire) and extra rubber cement. Include an Air gauge the small kind like Progressive gives out at the bike show will work and is light.
I bought the Yamaha Kit and tossed half of it aside and went with what I mention here.
If you really want to go lightweight, Harbor Freight sells a Yellow line that has a female end on each end, you put some air from the good tire into the flat one and ride slow to the pump. Or better yet get a truck to stop and steal his air. And BTW most Big Rigs have an air line if you wave them down they can air you up.
I forgot to mention that a screw with glue on it makes a killer plug for a nail hole in an emergency. So I also carry short screws.
Well what did Mr Butler do for a backrest or seat Mod, Got any pictures?