Get you home breakdown recovery

hi all
Am putting my bike back on the road 1st june for 6 months
Have got a ticket to the EV show at Silverstone 135miles away which is further than i have ever been on her but i need recovery, cheapst i have found is £40 Start which will get me and bike home
even after last years upgrades I still need a backup plan
last year i did new radiators,tapets,new cover seals,filter & oil,new jets. not much left to do now,new shock RED,forks were done correctly this time,new starter motor from the usa £60.00 and I revived my 6 year old Yuasa from sudden death by desulfering it and its been on a gunson charger all winter.
she started right up and idled at 1300 sweet even when cold