any tips? I'm having a hell of a time with the rear wheel bearings
Get your hands on a blind hole bearing puller (for larger bearings). It does not have to be an expensive setup, so a bargain on something like a Harbor Freight or Northern Tool deal will suffice. Whether or not the unit comes with collets, you might still have to fabricate an adapter to sit behind the bearing on the puller's forcing/pulling screw. Bottom line: If you are not going to be removing wheel bearings frequently, you won't need a big-dollar removal tool.
In the past, I have used large pieces of tempered schedule 80 pipe in a pinch, and lengths of "all thread" with appropriate nuts, washers, and a piece of PVC pipe to act as a receiver. In an extreme case, a slide-hammer adapted to the task works well.
If you elect to use brute force, and smack it out with a drift and hammer: Do yourself a favor and use a HEAVY DEAD-BLOW HAMMER. The more you have to beat on a bearing, the greater the chance of the bearing bore, or seat being damaged.
One thing to bear in mind is that once you remove a bearing it is TRASH, regardless of method used to remove it. You can also apply heat to the wheel bearing bore (inside the hub) using EXTREME caution not to do any damage. You can also use some freeze spray on the bearing to shrink it, and ease the removal.
Good luck, and most importantly, HAVE FUN!