Their prices seem very reasonable.

It was surprisingly cheap for an NZ server! I'm paying in 6 monthly blocks to get that price, and it's a custom plan as their off the shelf ones weren't quite balanced right for us.

I think you should be fine on those specs, disk space might be (slightly) over provisioned, unless you will be keeping a couple of full local backups of the DB.

I started with 100GB and after transferring across the basics it was at over 80GB used already, which is 60GB lemmy DB, 7GB pict-rs DB, and then other bits and bobs. I haven't started any of the alternate front ends or ancillary services either. I don't want to have to worry about old docker images, excess logs, or a database dump filling up the hard drive and bringing down the server, it needs head room so I went with 150GB. Plus it's nice to be able to transfer stuff to the server before bringing it down to minimise downtime when needed.

Traffic should be fine until you get scrapped, I see that my bandwidth has more than doubbled in the last 24h:

On the existing server it causes quite extreme slowdown, and our specs are being halved. I have a lot of ASNs blocked or with capchas through cloudflare, but I'm going to investigate putting Anubis over the various UIs (not the APIs, which aren't targeted and could impact federation and apps).

Up until now we have been using upwards of 3.5 terabytes of traffic each month, but it's highly likely that the majority of this is transferring of backups, which included 250GB+ of cached images. With this now in object storage, transfers should drop by a lot.