Stubby aerial is very cheap, £5 from eBay.
New air filter, pop charger, K&N etc.
Wheels spacers
Plenum Spacer
it depends whther you want your mods to be styling mods or performance ones. Best bang for your buck performance wise is the UpRev flash but if you are planning any performance mods then it's best to have the flash last.
Can dhow you plenty of mods and discuss them with you tomorrow.