You may want to look at this set,or a similar one for doing a lot of rabbiting:Newb with first router (used plunge router) looking to get a bit set to get started. I noticed that a lot of the small-ish budget sets do not include a rabbeting bit, but the MLCS set does - specifically, I was looking at the MLCS 8377 15-pc set with 1/2" shanks (too newb to have link posting permissions, but if you search for that item, it will come up, or search on Amazon for "B000FJRN8S").
Couple of questions on this set. Does it have different size bearings (and can I move them from bit to bit) so that I can cut different size rabbets?
Are the straight cut bits the correct size to cut dados for US dimensioned plywood, or are they true to size, meaning plywood will fit loosely?