AerBabe
Glad to hear you are trying the PA28.
Couple of things you may wish to consider....
Cherokees are notorious for being available with many subtle difference as an earlier poster noted - so it's worth checking the POH for each individual a/c you fly and reviewing your checklist in that context ... e.g. some of the 140s start on left mag only, some 180s have a rpm range restriction ion the cruise (although the tacho should be marked anyway.)
Secondly, the AIIB may look at the checklist used in the event of an incident and comment in their report, so best to make sure that it aligns exactly with the POH and any amendments to it just in case.