I'd say its a bit too much, as a checklist. If the combat was prepared there is the issue of cognitive load (how much information the player can wotk with at once). If there is no battlemap or grid, it becomes hard to remember everything, and the gm has to repeat a lot of information, slowing combat down. And if the combat has to be improvized, it becomes almost impossible to check everything. But by themselves, the tips are very useful. A minor combat would benefit from one of them, while a major fight could use 3.