Raleigh - not such a winner, help needed!

My long term plan is to convert it to fixed but....and some people might think this is ridiculous...I am doing a 40km road race (a part of a triathlon for charity) in June and I think it'd be great to do it on a vintage bike...yeah I'm an idiot! Besides it's looking pretty unrealistic at the moment

I don't really think this is old enough to count as vintage yet... it's just old. Like a scruffy car. Maybe it's now worth 2K if you trade up?