Here's the drawing that came back with the new liner

Corners are 45's
Fiberglass stairs are at the 8' section on the top (not the 8' section on left)
5 returns in the liner, one in the stairs
1 main drain
2 skimmers
1 light
polymer walls
poolcrete bottom

everything is very clean
gaps are re-taped
i have new gaskets for skimmers and main drain
i got new front pieces for the returns (the old ones have cracks in them)

in my plumbing, I do have a line that is behind the liner to drain any water that gets behind it
it's located at the floor of the shallow end at the 5' section to the right of the 8' section by the stairs

Any tips you can give me would be great, I have to do it tomorrow I can't get any help during the week.

Thanks!