Wow that's a big glider!.... Never heard of DEVCAd but the website looks interesting.
Plasma is for steel, aluminium, stainless ... basically anything metallic (I've heard of glass being cut too... but never tried it [not likley to]) Not my machine... but very similar
https://www.youtube.com/watch?v=AyhV4oLOHEg I have a small plasma and can cut up to 6mm plate... but I'm looking to upgrade a little maybe in the future (speed of cut + quality of cut with a newer machine).
I have an expensive hobby with Landrovers (I've ended up with my own R&D department... haha), so am keen to build my own parts, given every time I ask someone to make me something (or build something) I don't end up with what I asked for.... trust no one believe nothing (I use CAD for a living to drawing is easy for me... the thing that always took the time was the making of the parts and getting alignment etc... now I go from idea to part in minutes all welded up and complete)
I use sheetcam
http://www.sheetcam.com/ ... which you can use for all other manor of things (not just plasma)... basically all you need is a drawing and import that.... the only thing is it does not do 3D only flat objects (there is a 4th Axis option but that is only for plasma).
Rob