Stage Lighting And Effects Equipment

I'm working in my school's theatrical lighting crew but i'm getting nervous about working with the current system as it is well over 15 years old and also it's totally falling apart. The whole lighting system needs replacing, i've been in touch with a friend who is a stage manage in a proper theatre he said that my school would befit with a 20 channel dmx system with Gobo support, and mini spots. However the problem is the cost, the school spent quite a lot on updating the sound system which was also falling apart, to add to the problems I don't think my school will take a year 9'er very seriously. I would like some recommendations on some cheap lighting systems, if possible i'll like to keep it under £9,000 with labour.

All advice is greatly accepted