I did something similar (Peugeot HLE: came with saddle, seat post, cockpit and brakes) last Christmas for Uni. Got it together for sub £150, so you should be able to manage. I got the wheels (with tyres and tubes) from here, the cranks from ebay and the chain from CRC.
I don't know how new you are to bikes, so here are some things to be conscious of: get a crankset before you get the bottom bracket (you'll need to be careful with the chain line).
If you check Peugeot catalogues online, you can find the year of your bike, as you might have a French threaded bottom bracket (which would be a pain).
Be aware of the 1/8-3/16th difference in chainring, chain and sprocket sizing.
I wouldn't worry about changing the saddle (or bars, unless for comfort/practicality) for now, in fact you're quite lucky that it's all cabled up with the brakes (assuming the cables are fine). I'd keep both brakes for a little while (to get used to riding fixed, and if you want to go single speed instead), and keep the front one on indefinitely.
Maybe change the stem eventually.
I did something similar (Peugeot HLE: came with saddle, seat post, cockpit and brakes) last Christmas for Uni. Got it together for sub £150, so you should be able to manage. I got the wheels (with tyres and tubes) from here, the cranks from ebay and the chain from CRC.
I don't know how new you are to bikes, so here are some things to be conscious of: get a crankset before you get the bottom bracket (you'll need to be careful with the chain line).
If you check Peugeot catalogues online, you can find the year of your bike, as you might have a French threaded bottom bracket (which would be a pain).
Be aware of the 1/8-3/16th difference in chainring, chain and sprocket sizing.
I wouldn't worry about changing the saddle (or bars, unless for comfort/practicality) for now, in fact you're quite lucky that it's all cabled up with the brakes (assuming the cables are fine). I'd keep both brakes for a little while (to get used to riding fixed, and if you want to go single speed instead), and keep the front one on indefinitely.
Maybe change the stem eventually.
Most of all, enjoy your sweet new fixie.