Suggestion:
If you two is going to be Host/GM/Owner, keep it that way, because the more
GMs the more confusion it is going to get.
If you have 100 sets, have an outline on stats of achievable level, say level
1000 max, then 20 level apart at first 100 levels then 15 level apart of next
100 levels and so on. Some universal sets for all class to save you some
work. As i have seen on foundation, mass drop of gold piles is too teadious to
pick up even with auto pick up on, so have pile of 100k drop or remove gold
drop but increase chance of bars dropping.
Items is easy for low level to get, a bit rarer as higher level.
Bosses spawn time like EC, ZK, WT, OK ... should be shorten, and chance
of dropping a bit more.
Levelling system and pace in Foudation is good, I wish that will be kept.
Mobs with more than 65k for higher level.
Good fun for cave is that you can level, earn cash/items, and boss kill in the
same cave, no need to break it down to levelling and hunting area.
Starter gold of 50k should be removed completely imo, because ppls will
exploit by log/drop it. Have some reasonable starter pets so newbie can
hunt and get gold/items to start with.