That's what I thought. 35 amps seems like well enough but I couldn't remember which rated ones we used to use on old Brit bikes.
Halfords cheap 8mm low pressure LPG gas hose from the camping department makes great fuel line.
And Maplins do a really good brake light switch for £2:
http://www.maplin.co.uk/low-cost-standard-microswitches-6453