You can always check good deals at Slickdeals, and you will find a lot of good Sony Alpha deals.
@kkee3 I prefer the Lexar CFexpress Type A Gold.
I use Atomos Shinobi, works well.
Get Godox flashes, they are affordable and covers most needs.
Get ZV-E10 or just wait the ZV-E10 II, it will coming out soon.
a7S III supports UHS-II SD cards and CFexpress Type A cards, if you want to get best performance, just get theCFexpress Type A cards, these cards have...