I'm also looking to paint my car in my garage and this info is great stuff.
I also did the custom cowl like you did s10, yours looks quite a peice better than mine at the moment though...
what was difficult about the Enamel?? as i was looking to do a single stage
what kind of fresh air system did you use for your lungs?
if you have an extraction fan you can always run some 12" or larger ducting type stuff to run the extracted air out of your neighbours way.
Also what did you use for a filter?