Hi mrpooh3,
Notebook CMOS batteries are quite often held in place by a sticky pad but mainly when they are the wired type that you plug into a header on the MB, the worse type are the ones that are soldered into the MB, thankfully there are not too many of those around these days.
Not pestering anyone at all but can I ask that when you are ready to start the parts list that you start a new thread specific to the build, thanks
Good idea sharing the photos btw