Dips in the liner? Where? You had concrete floors poured, so it must be on slopes eh?
If it were me, I'd have it fixed at end of season. Unless it is a threat to the integrity of the liner.
For the Safety Cover....why not order a rectangle big enough to cover your pool?
Seems like it would be much easier to install those anchors in straight formation than with curves.
If it were me and I could get the cover and install it myself for $1k or more cheaper than having someone do it, then I'd do it myself.
Save less than $1k, then I'd have them do it. Not worth the struggle.