You have a kettlebell. For god's sake, swing it!
Some people call the kettlebell swing the king of exercises, and not without reason. When it comes to packing a good training for almost your whole posterior chain (interested in a strong back and buttocks of steel?) and some high-intensity cardio into a short time-frame, the kettlebell swing is without equal. Since your current workout kind of neglects your posterior chain, swings would make an excellent addition.
A word of caution: The kettlbell swing, as most free weight exercises, requires proper form to be safe. Specifically, you need to keep your back straight. You can't strengthen the back without, well, without using it. While incorrectly performed swings could hurt your back, the benefits of proper swings for the back far outweigh the risks. Also, with just 16Kg you have some margin for error. You're not deadlifting 400 pounds.
Instructions are abundant on youtube.
Other kettlebell exercises for the minimalist who is short on time are the clean&press, snatches and turkish get-ups. This combination was introduced by Pavel in his book Enter the Kettlebell (ETK). Particularly the clean&press is an excellent full body workout. Snatches and get-ups require a little more time to learn, but are well worth it if you want to make good use of your kettlebells.
If you combine press-ups and overhead presses in the same workout, you will have to reduce intensity, as there is quite a bit of overlap in the muscles they use. You could do them on different days.
As for getting ripped, that requires you to get your body-fat pretty low, and that is mostly down to nutrition. Your pre-workout snack isn't really a great start, although you might get away with it if you have good genes.
You don't need that much muscle to be ripped, if you push yourself a little (but not too much) the described workout should easily cover that.
If you compress rest periods between exercises, you can some pretty intense cardio out of a workout like this. The other technique is to first do everything else, and then finish a workout with a few minutes kettlebell-swings (or snatches), as these are done at a relatively hign number of repetitions and are really good cardio on their own.