sorry to hear that mate, it's a bitch... I work for JLR and am waiting, the axe is getting lower!
if you have the basics to get going and don't need any extra funds, loans etc... I'd go for it, not got much to lose, if you have a few contacts from the garage, while not entierly ethical you could always try and tempt a few punters away, especially if you can undercut the main dealer. everyone is feeling the crunch, i know my mondy is off the road till i get a chance to work on it cos can't afford garage repairs.
Whatever happens best of luck, sure you will find lots of support... and some abuse as well, ying and yang and all that!
toodle pip