Bit of an update. Almost everything got delivered now. Only thing still waiting on postman for is resistors for my led headlight, and that's fine, if that doesn't get delivered it will be a shame but it won't stop me going to Ant freeze.
Have had a mini crisis with the ESC, damaged a chip on it. Probably you've seen my panicked other post about it. Rory says it's fixable though. Phew! I been having a good look at it and trying to work out what I did. It's not any of the motor connections, they are not able to touch each other. I do think I figured out what I did though. I have wires attached between battery and esc for my LED, but without the resistor they not actually connected up to anything. I must have brushed that wire against a motor case or one of the other connections. That is the only way I can think the short out happened.
Major lesson learned. Should have covered the bare end of those wires whilst waiting for the other components. I won't do that again! I'm just relieved Rory can fix it on the day. It leaves me in the hilarious situation of first time I ever get to drive my bot will be at a competition, but that's fine. All fun and games.
I now have pololu wheels as well as Shakeys ones. They are only slightly bigger, 32mm vs 30, but I think that 1mm top and bottom is necessary. Was gonna be a little rub-its-belly-along on the smaller ones, clearance was virtually zero.
I prefer the look and width of the tyres on Shakeys wheels, but the tiny extra hight, combined with them being thinner and therefore quite a bit lighter (almost a gram less on each) makes me think the pololu ones are the best pick. Means I already have wheels for the next project down the line I suppose.
And so, I managed to finally weigh it will everything all here (well, except a resistor) and...... 150.3g! That ain't bad at all

I'll squeeze a few more holes in somewhere.
Tomorrow and Friday I will finish tinkering about. Bit nervous that I can't test drive before getting the ESC mended but it should make Saturday interesting if nothing else!