Personally, I would only drop it to pick up another club or wedge if I really needed it. Dropping it, just to drop it makes little sense as it just gives you another option. Now ditching the 4 wood for a club to get you another 5-7 yards would make sense.
Shot a 49 and 45 for a 94 today. Combination of new clubs and better ball striking did it. Made some fundamental changes to my longer iron play in the fairway. My short game is decent as is, and driving is OK, too. We'll see what tomorrow brings on another course.
I would maybe think about walking for the practice round, just to be able to see more of the course at ground level. But I guess it depends how much of the course is accessible by cart.
have you got yardage and green charts that you can make notes on and check yardages with?
I say walk. Hilly or not, it'll be good to know ahead of time how tired you may get as you play and you can plan accordingly. You don't want any surprises come the day of, and as we've mentioned before stay within your routine. Your caddy can use the cart, but you should walk.