The number of flights that need manually inserted MOST months does not have any effect on MOST peoples rosters.
Choosing the Chubby Chick (CC) has predictable results if you get her, butt is still not guaranteed due to the way CRS builds the roster, anyone senior to you who wants those days off will often be allocated the CC ahead of you.
Worse case scenario, you will be overlooked by the CC as well
With the 91 hour averages at the moment, if you get 3-5 days off before leave, CRS is likely to put in a ULR flight before to achieve the desired Blocking Window
LW20, yes bunk is counted, anything that gives you credit hours counts to your 92