May I suggest a different concept?
What would be wrong with ordering something like a "Ventus 3 FES" (it won't be called that) and while you're waiting buy and fly a more simple flying machine like an older Discus, LS4 or 7, ASW19, Pegase, etc? You can sell that when the new ship is on the way. At that point you'll be flying a superb new FES glider with a much more experienced approach. Experience might mean having landed out a few times, damaging it while rigging, who knows, but perhaps less stress to learn on the less expensive glider and it's all good for you in the end.
Jim