Yeah, I think so. The best pull in the last six years in our weight class (in the U.S.) is 606 by Tony Conyers. It's just hard to say because the great specialists at 148 have pulled 650+; compared to them, my pull is nothing.
But yeah, 600+ at 148 would be awesome. I think it'll happen someday for me, though it's going to take a lot of work. I think a ten times' bodyweight total is possible within two years, though it would take around a 550-lb. squat, 330-lb. bench press, and 600-lb. deadlift. Right now, those numbers are all out of reach, but I totaled 1229 at a meet two years ago, so another 75 lbs. on my total in that time seems feasible.
I'd love to see you pull 600. You're already an incredible lifter, that would be monumental.
If I'm doing my math right, you already total elite at 181, let alone your own weight class. Insane.
Do you think 148 is the class for you, long term? Or do you think you'll move to a different class eventually? Hard to imagine 148 not being perfect for you given how badass you are at that weight but I'm curious.