I’ve bought most of these over the years, the airbrush isn’t the best for a little more money you can get better beginner sets with better compressors (my aldi compressor randomly broke somehow, heard multiple instances of this)
The knives aren’t anything special, you’re better off buying a tamiya or excel hobby knife and saw if you’re working with Transformers or gunpla etc.
the vice is a vice probably the one thing I’d recommend
Plastic welder works i think? But i prefer using plastic cement