Good luck!...been trying to find a way to have a high tech setup on the cheap.
The only "cheap" way is to get stuff second-hand or by doing stuff yourself (DIY). Both are possible and DIY can be very enjoyable and rewarding...as well as educational. Check out the DIY forum on this website for all kinds of great ideas on making your own lighting, filters, CO2 system, stands/hoods, etc...
Welcome to APC!