Juggler's dexterity

You are a capable juggler and can juggle a variety of items as below:

1. you can perfectly juggle (no check required) 3-4 balls or two clubs/knives
2. you can juggle 5-6 balls or 3-4 clubs/knives with a performance or sleight of hand check (your choice) with advantage
3. you can juggle 7 balls and 5 clubs/knives using a standard check

If you are attempting to juggle above the maximum stated above, it will be done with Disadvantage. If you attempt to juggle irregular items, dependent on the items and teh number of items, a decision will be made by the DM regarding how it should be rolled)