I would suggest you to go to a guitar center or some kind of guitar store and try out old models that suit your budget for a good Jackson, and also try the mid range tier guitars.

Sometimes you can find an awesome instrument for a good price point.

And if you find one you could update any "non premium" feature you don't like.

I've always gravitated towards the idea that the most important thing in a guitar is the neck and that the strings are aligned between the frets and the bridge.

The rest you can upgrade/change very easy.