There is no doubt in my mind that you could do it
Erm, I would actually suggest making some bases yourself for the robots. There are some really cheap gearboxes in rapid (?1.70). The sensors etc etc etc are also top notch there. I just think that once you've made one robot, it's so much more easy to make another....and another. And at least it won't cost you a bomb.
I think a problem would be that many people may not be interested in doing such a thing (well, at least not in MY school back in the day) but maybe yours is a lot more technology based. Also, you have to be mindful that you yourself have got a robot, but it is not yet a functioning micromouse. These things require a lot of time and effort (I tried myself, and just thought meh and gave up) so..........yeah.........i'm not saying that you shouldn't do the club, but from my experience, if you have trouble, then what are like, 99% of the other people in your school going to say about it? I guess stuff has to be kept as simple as possible.
I didn't even touch programming until I reached university, because nobody ever pointed me to it or showed me how 'easy' it could be. Again, this seems to not be the case with the environment you are in. I however, know for a fact that ICT in my 6th form still sucks to the nth degree.
Pretty much everyone at my 6th form loved Media and English. everything was pushed towards these subjects. There were only 2 people doing A level physics, and there was no electronics option.
See, Electronics is DEAD in UK schools. You can help make it cool again in your school.
I wish I knew what micromouse was when I was your age lol. I also didn't really have determination to make use of my talents either.
Definitely go for it and good luck man.
Oh, and I guess I may talk to you on msn about it some time also.