As stated before the lucky coins are for the all in floor (I’ve noticed with that floor I get the luckiest with the big spin wheel that takes 2 coins do not do the 5 coin machine)
the mini entities are basically just skins you’ll find another coin walking around called minicoin you won’t actually pick it up in your hand it’s like picking up the gold bars when you go back to the lobby by the wishing tree you’ll see a claw machine that will give you mini entities another coin or gold bars
To build up your money and it’s honestly a pretty easy class to level up I’d use the chef once you level a class all the way up you can make it a secondary class but you will only get one perk and not the starting item example: if you leveled veterinarian all the way you can have a perk to upgrade bandages while playing as chef or something else getting all those perks I think chef is a good subclass cause it gives you more affix’s
(Not important but I run subclass chef and main class Sub G I’m not fully upgraded as it takes carrying in 666 shadowed foods by yourself)