Glad I could help.
I haven't bought anything from MCM but he has a good reputation from other who have. I understand the information provided with the kits is very good.
Resin is a little different from styrene but you have to start somewhere
It is more brittle and you have to use CA (super glue) since regular model glue doesn't work. The dust is somewhat toxic so it is recommended you use a filter mask, I try to do any sanding / cutting outside so I don't fill my work area with the dust. Some resin requires alot of prep work (flash etc) but most of the higher end stuff is pretty clean, I'm guessing these fall into that catagory from what I've heard. The caster is a modeler and even frequests some of the model car sites so I would think if you emailed him he would answer any questions you might have.
Good luck, resin is a little scary at first since its expensive but it opens up a lot of new options.