Stef, what kind of set up did you settle on? You realize that you can always upgrade later on :lol:
For my house bunny, I found that providing a litter tray with a piece of wire across the top was basically all I needed to do for him ... he would pee in the litter tray, but the poops would dribble out wherever ... I just kept a small broom/long handled dustpan handy and sweep them up whenever I found them.
To litter train him, I kept him in a cage for a week so that he had established his "bathroom corner" in the tray, then moved the tray with a top wire to an out-of-the-way place in the house and showed him where it was once ... after that, the odor would draw him back to the tray. I also found that with a buck, it is definitely necessary to clean/empty the tray every day and even 2x per day. Now, if I had used pee-pads to line the tray it might not have been necessary for cleaning 2x per day.
If you do go for litter box, you should also still find a wire rack for the bunny to sit on if it is a long haired bunny like mine. Even a short haired one might want a rack so his feet don't trail the litter material out ... depends on if you have a fastidious bunny like mine :lol: