Generally, people use 'A' pots for volume and 'B' pots for tone (or 'A' for tone too). But, there's no hard and fast rule as different pots suit different configurations and/or different tastes.
There's no reason you can't use LP style wiring on the bass (like this), it's just the hole layout on the ESB-4SC is a little awkward for the 2 volume, 2 tone config... but whatever works for you. The GR-1SF diagram you linked above would also be fine to use, just with a single cap and the master tone positioned down with the two pickup volumes.
The pots should be marked as either A500K or 500KA etc. on the upper edge (like JT's image), the side or sometimes the back depending on which version of pots were included in your kit.