The main issue is that you are creating a huge amount of debris doing all of that between lube, popping out primers, trimming and dumping powder. Presses are going to run best when they are as clean as possible, which is one reason that on the more sophisticated progressive presses most people wet tumble and a lot of people, myself included, decap before putting the cases in the press. You could, in theory, do what you are proposing, assuming your trimmer is small enough only to take up one station, but I'd bet that you end up spending more time keeping the press running than you save by not swapping out toolheads.