Is my Meditation Practice Too Busy?

I've been meditating fairly regularly for the past 5+ years, but have really only begun to follow Buddhism the past year or so. As such, my meditation practice has changed. I admit, I am not presently working with a teacher or monastery, though it is on my radar. I meditate every morning, from 20-30 minutes, and then usually a short one at night, around 5 minutes. Yes, I'd like to meditate more often, I'm working towards that. I wonder if my meditation is too 'busy'. I begin with focus on the breath, generally counting up to 10 a few times. I also throw in the "I have arrived, I am home..." mantra during this period. I then move to a short 'prayer' routine that I developed in recovery from drugs/alcohol - this is only about a minute or so. I typically then spend a bit focused on non-self, passing through the body and saying 'I am not any singular part - I am not the senses, the flesh, bones, blood, organs, etc'. This often leads to contemplation of the 4 Noble Truths, with which I sit for a bit, maybe 5 minutes or so. I wrap up usually with metta, going through the various people (myself, an honored person, loved, disliked, etc.). Writing this I'm like "wow", I do all that in 20-30 minutes??? So that's why I pose the question here - might it be wiser to just stick with one of those? Abandon all? Center on just a few of them? I feel like it works for me, I do enjoy it, but I do wonder if I'm sorta 'cheating' in the sense that I'm doing too much, keeping the mind too occupied in order to pass the time 'quicker'.