NAS suggestions

Have a small home based business with data management currently handled between some cloud storage and external hard drives but looking to move to a NAS based solution while still utilising cloud storage as an offsite backup.

Looking for something with the following features:

- Simple easy to setup and manage requiring very little knowledge of network administration to maintain.

- Ability to access the NAS like a mapped drive from both Apple and Windows laptops.

- Ability to access, edit and save video files (a few GBs in size) without there being too much of a lag or inconvenience to the point where I just end up working with those files locally on the laptops hard drive. I won't have to do that on a daily basis (most traffic to the NAS would be for much smaller files sizes of 100mb or less) but would be nice to know that when I need to do it the NAS is capable of that.

- The capability to sync selected directories on the NAS to a Google One account as an "offsite" backup.

- The ability to access the NAS anywhere, share files externally on a private link if required and access it via tablets or phones.

- The ability to use the NAS as an FTP server or web server for testing would be a nice bonus.

- Outside of "work" the ability to use Plex for a media server for home entertainment and install apps like BitTorrent, Kodi etc. on the NAS would be nice.

Been looking at the WD My Cloud EX2 Ultra (8TB) https://www.amazon.co.uk/Western-Digital-Compact-Ethernet-3-5-Inch/dp/B01BIGSRLS which seems to tick most of these boxes but interested to hear any other suggestions at around that price point.