Can you activate all four at once? If yiu can, you have a sweey setup. As long as you have wood, unlimited fishing. And good amount of iron and tools from zombies. I almost always get swords.
really xp per hour so 200 mobs per 10 minutes .so like 1000 xp per 10 minutes. 4000 to lvl 50 in 40 minutes So you get lvl 50 in 40 minutes so 3x lvl 50 in 2 hours