as i say i have done 3 sets with no problem, as per walts website, i used i layer of cloth tape ani i foud it better to do 2 layers of electrical insulating tape so that you cover the whole inside width of the rim rather han just the spoke hole area, if you could get pvc tape exactly the same width then 1 layer would do, i think its a standard width though.
i have used stans sealant so far but my next step is to make my own sealant from latex, slime windscreen washer.
there is a learning curve but once you get the knack of cutting the rubber around the valve right, about a square cm, and double checking in the bath and then sealing any small leaks your sorted, and do buy a compressor they are only cheap. i think they main reason people get pissed of is messing around with pumps or co2, having unlimited air at high pressure takes away hassle from a reletively simple job.