What is there to practice on guitar?

Have you considered learning music theory and how it relates to the guitar? You can start with the basics by getting a beginner's guitar manual that has rudimentary music theory and exercises.

Learn how to notate a composition on manuscript paper. That will take the boredom away.

What I used to do, was to just play along to my favorite albums. No scale practice, finger exercises, none of that boring garbage. Metronome, BAH.

Learn to play music, plain and simple. forget tryng to learn metal songs for now. Go more classic Rock. Metal is too frenzied and fast for a beginner to make sense of.

Try to figure out the songs by ear. You don't have to be good at it. Forget tabs. (except to maybe find out the key of the song and the chords they may be using)

I would put 6 LP vinyl records on the turntable changer and let them go and I would attempt to play every song, good or not. Then turn 'em over. I would spend hours at this.

Eventually things fall into place. Certain bands use certain chords in familiar combinations. Once you figure out the AC/DC formula, or the Black Sabbath Formula or whatever, all their songs all of a sudden will be easy to figure out.

During the guitar solos, don't try to copy the one you hear, tr to make up your own using your knowledge of scales.

It takes time, but it works. since you seem to want to have a regimen and aren't a "hobbyist" , Try doing what I suggest for a while.

It's more fun, anyway.

Doing scale exercises and all that stuff is fine, but nothing replaces practical application.

It's like, would you rather exercise by jogging all alone, or would it be more fun to race another person?

Good advice so far.

But you sound as if you are just going for the technical, ignoring the basics that got you so far in order to gloss over, the real enjoyment of the experience.

If you want to play a certain style, discover how you can become acquainted and more comfortable in playing it. Relax.

Listening to the music is paramount, and so important, when it comes to getting into your favorites. Relax.

As well, what has helped many of us is to get into audio recording and playback for exercises, dubbing over (sound on sound techniques) your own solo sessions to create 'duets'.

Lots to help on the way, to improving and getting the most out of what you can with your guitar.

Stick with what you do know and enjoy... the rest will come about soon enough.

You have chosen a couple of strange scales to practise - a basic major scale, played in a range of positions is the first scale you should learn. I never understand why people want to play chromatic scales first - why?

Apart from that, really I agree with Russell..