do they take a rake on hands that end preflop?

If yes, just tighten up.

If no, raise about the same and drop some of the bottom of the calling range. You can move some of the raising hands up in value (more raising with K9s, less playing w K5) and ditch like 53s

Yeah, I wouldn't do too much with this call range. Can drop some of the lower gappers probably and maybe like 96s and T7s. I would do less cutting from this range and more figuring out what boards you can exploit them on.

In general, I would worry less about rake when you are forcibly invested and getting great prices. The price, combined with the forced bet makes most want to keep the vast majority of this range structure intact.

Look your opponents, vs aggro people can defend much tighter than this because realizing less equity (either they 100% cb, or barrel turn)
WPN is pretty trashy network so don't be afraid to use mining as well