Congrats Tim. I also use a Screwdriver and I've thanked Trogg for bringing this great device to the market.
As mentioned, make darn sure you have spare batteries with a decent charger and plenty of juice. Think about getting a spare vape device just incase.
Get juice samples from a variety of vendors in small quantities to give you an idea of what you might like, and when you come across that 1 or 2 you really love, load up on it.
If you need any info regarding where to get batteries, this forum has many links for about anything you can imagine. I know - I've found them and used them. Just ordered a few more 18350 batteries for spares.
Good luck and stick close here for encouragement and support.