Firstly, Welcome to the forum
I ordered my Roc via Broadspeed like yourself; When I ordered my car in Sept (pre financial meltdown) dealers generally snubbed their noses at any form of discount. However in the current climate, I'm sure there are deals to be had, and if not on the price of car, better finance deals.
I initially was going the PCP route, and requested a quote from Broadspeed. As you know Broadspeed deal direct with UK dealers, and I assumed their financing would be though the same network, however it isn't and once I received the offer I rejected it. The APR was 10.8%, which overall meant paying of £6k in interest over the term, and I also wasn't happy on some of the terms. Currently I haven't yet decided which finanical route to take, I've asked the sourcing dealer to provide me with a quotation, and I'll assess the market nearer delivery time.
Regarding build time, your right on with a typical VW timesales, be thankful you didn't spec a Pano roof, as this would push it back further. If you want a quicker delivery, drop the options. Some guys on the forums have managed delivery within a month picking up VW stock cars.
As far as a better deal, well there are plenty of used or VW sotck cars on the VW used car section, you could try haggling, and solve your delivery time query.
Good luck, let us know how you get on!