...and the order in which my pitchers appear in the P-P-P slots is also very important.
Yeah! Forgot about that part. The RP's must be in order from the best two taking up the RP slots to to the rest of the guys in the P slots. If I don't have 5 total RP's then the 3rd best SP goes into the P slot even if he's not pitching (with the best two in the SP slots). If one of my top two SP's is not pitching they still stay in the SP slots unless they need taken out of the slots to make room for someone that's playing that day.
Lastily I always put the people that have multi-position eligibility in the Util slot if possible.
While some of this is definitely superstition it's also based in logic. If I keep my best SP in the roster even on days they don't pitch then if I forget to set lineups one day I stand less of a chance of missing my best guy's starts. If I put my worst RP's at the bottom of the P list it makes it easier to find which one to take out if I have a 3 SP day. And by keeping the multi-position eligibility guy at Util it makes it quicker to shift him to another position on someone's off-day.