Update, mowed over at the farm today. Mower is total badass! Scalped the ground in a few places though bc it's such shitty uneven terrain over there, but it shaved about an hour off the time it took on the old one and didn't have to back up and go back over the thick stuff twice. It side-hills so much better than my old one too.
One thing about the 54" deck though, it's super badass for trimming around stuff because it sticks out, but you can fawk up the ditches in a hurry by marring the side of the deck in the ground with the blades going. 54" is definitely as big as I would need to go for what I mow, I'm glad I didn't get a 60" zero turn for sure now.