Thank-you to everyone for your help.
My PayPal came through yesterday and I purchased the Redwood putter, G10 Pro set and some GDI balls.
Turns out the swing meter speed isn't an issue (although I haven't tried them without the GDI ball yet.)
Now, I have to learn that I can out drive the fairways on a lot more holes than you can with the starter set. It's also nice to see the back of some of the par 4's that I'd never seen before on my second shot.
I scored a -3 yesterday on the Bethpage 9 unlimited which is my best ever, so the clubs and balls, for me, do make a difference.
Tom