Not a lot to add, Your instructor may have different ideas but on the Rimmer-mobile (Arrer2) on t/o I use everything fwd till about 1K then 25/25 for the remainder of the climb staying in the circuit it'd be 21/2400. The other thing I 'd recommend is gettting configured early, I aim to be slow enough to have the gear down by the x wind (or in the overhead if joining that way) and flap 1 by late down wind, flap 2 rolling out on base and full rolling out on final.
You'll find your arrivals more comfortable with a dribble of power until the touchdown (the trick is finding out how much that dribble needs to be - too much and you'll use a lot of runway too little and el thudo - but that's part of the fun nez 'pas?)
The other thing you might find is in ground ops the steering is a lot heavier than a Warrior/Archer but you soon get used to that.
In truth, if you've got a lot of time in PA28s you shouldn't find the Arrer a stretch and you'll enjoy its longer legs on XCs