yeah, the base should be fine for that. I am doing all that and editing (light) video and audio. I got the least expensive base and added external storage for my collection of music and videos. Lovely machine. Works great. Highly recommend.
my current 2014 mini lasted for 5 yrs, and i hope the new mini will last the same
i'm leaning towards the base model but should i upgrade to i7 or go for the 3.0GHz 6-Core Processor 8gb/256 GB Ssd instead?
Absolutely perfect. 8GB is also enough, although 16GB may... help as years ago on etc. I do similar stuff, have a fair few tabs and programmes open, e.g. Spotify, FireFox as well as Safari etc, and use 12GB ram.