Oilflyer,
By now you are probably beginning to realise that Glassing airplanes is a bit more involved than at first thought. I guess it can be said that you are now moving to a different level of modelling.
I do not know that I would agree with covering your airplane with panty hose. There is a big lump at the toe end! I have never had a problem with brands of cloth. I have purchased from many sources and it all seems the same. If you mix up enough resin for one wing panel only and work from the centre out the 30 min working time should be OK. Do the same for the econd panel and the 'join' will not be an issue. The first lot will still be wet. The resin will stay wet for a long time after the "working" time has expired.
West Systems is a top quality resin. However I stopped using it because some of the other applications I have needed a longer working time. Even Wests extra slow hardener is not suitable for me. I use MGS brand, it is available from CST Technologies. It can use two hardeners, slow and fast, The fast is the same as West, the slow will give about 6 hours working time. The two hardeners can be mixed for a custom cure time. If you have yet to purchase your resin it might be worthwile enquiring.
www.cstsales.com
Ed S