Bump up to a better base cooler like the Cryorig H7 or alittle above that the Cryorig H5. Or if a serious overclock is wanted a Noctua NH D15, Cryrorig R1, Dark Rock Pro, etc
Another option that may be better for video editing (you'll have to check program specifics for performance) would be a Ryzen 2700 or 2700x build since you get more cores and threads which in a lot of productivity software is a huge advantage.
You could probably save some money and get a cheaper motherboard from either Asus or even ASRock(they usually have a better price to features ratio) unless a certain board has a specific feature or look they will pretty much give you the same performance.
With regards to RAM check the motherboards manufacturers website for what is called a QVL list, basically it is a list of RAM manufacturers and models that are guaranteed to work as specific speeds. For the one you chose here's the link https://www.asus.com/us/Motherboards/ROG-STRIX-Z370-E-GAMING/HelpDesk_QVL/
The only last change would be maybe change the SSD to a PCIe speed M.2 NVMe rated one over a SATA speed; for handling large files like video editing it would give much faster speeds and would probably be beneficial at the extra cost, won't do much in the way of game load speeds though.