Expanding my 1k list

Hey! The last days I was thinking about what units I want for my first1k pts. I know want to build up the list in the artached image.

What units/(hero) should I add going further from the 1k list, and is it a good 1k list to begin with ? I want to achieve a nice 1.5k list and eventually a 2k trogg/squig focussed list so I can start my collection :)

I am happy for thoughts and recommendations. Also i am curious about what endless spells to get (gloomspite specific or simply the generic ones, if so, which should i bring?)

Best wishes 🫠