The 10uF, 63V, 20%, MKT1822 is not stocked at Mouser.
Here are the values they stock. They should be all that you need to get all the values in your crossover. For a speaker crossover 10% tolerance is more than acceptable.
2.2uF, 100V, 10%
1.0uF, 100V, 10%
4.7uF, 100V, 10%
Just type in "mkt1822" in Mouser's search bar and they should all show up.
In general, for speaker crossovers, 63V is fine, 100V is more than enough and anything above that is a waste of space (because those caps are large) and money.
I hope you get a chance to listen to them, they're absolutely wonderful!