My First featherweight!

I've decided to build a featherweight robot and try and enter a few competitions in the future. I'm looking for advice on all components (I've found a site called Technobots, is it good?) but I intend to use drill motors and their batteries to power the bot! It will be a full body spinner, similar to Blendo but hopefully more powerful. I'm new to fighting robots but have a strong background in computers and model rocketry. If anyone can help point me in the direction of featherweight competitions or groups I'd much appreciate it! (I'm based in Milton Keynes if that helps)

Here are my plans so far:
Attachment 6006
Attachment 6007
Attachment 6008