In March I head to Iceland & Scotland for a 8 day trip. Airfare was dirt cheap for March & April, so I figured why not?

Beyond the camera & lens combo, I will bring a Canon 430 EX3-RT speedlight, gloves (Aquatech), rain covers (I have been in Scotland twice in November, the rain is usually horizontal), a smaller pack, hand warmers, cleaning supplies and several variable ND filters.

Is there anything I am missing photography wise?
A friend has a small travel tripod (MeFoto) I could bring, though I want to travel light, is there a smaller option that works well?

Clothing wise I am set with long johns, snow boots, jackets etc.