I had that same pannier/carrier set-up on my R100 when i bought it.
Sold it to a neighbour for £50 along with the panniers. He fitted to his old r75/6 and is happy with it.
Its worth money to some. ebay it.
It'll pay for the headlamp that you need. On that subject I will say only this: Get an original, its a quality item that responds well to a more powerful lamp. Oh - and when its on, in the evening, keep your mouth shut - or you'll be eating all sort of flying critters attracted to the brightness of it!

Looks like a quick polish and you'll be on the road.
Steve Hawkins