Don't worry about a luminous vest, and if you ride with your lights on during the day you run the risk of accidentally flashing someone out in front of you if you hit a bump. This = T bone.
Take it steady on bends until you're comfortable.
Easy on the front brake, especially in the wet.
Keep your eyes open for sh!t in the road, wet leaves and patches of stuff on bends - diesel is super slippy.
Book up for your test - little bikes are the way in, but bigger stuff is easier to ride and more fun. Especially as the licence is changing next January.