You can run as many pairs of wires as makes you happy between the amp and speakers. You can use a single set of binding posts on each speaker and amp and cram as many wires in there as will fit. Or if it's more convenient, you can use both sets of binding posts on the speakers as long as you don't throw the switch on the back to bi-amp mode (which internally disconnects the two sets of posts) and you can use both sets of binding posts on the amp if you switch on both the A and B speaker outputs on the amp.
Using the extra posts on either the speaker or amp side mostly makes for convenience in attaching the extra wire pairs, electrically it's the same using a single set of posts at either end. Using two sets of wires per speaker is pretty much the same as using a single wire with conductors that are twice as large.
The most important thing is to make sure the polarity of the wires is correct. Like Mike says + connected to + and - connected to -, regardless of how many coat hangers you use.
Take out any post bridging that might be on your speakers. You do not want any connection bridging made between the posts that were there prior to this effort.
Not for these speakers. If using both sets of posts on the speakers and not using an external crossover, you
must keep the speaker input pairs pairs bridged. Otherwise you won't hurt the speakers, but you will get full range sound out of the woofer with no crossover to it. There are no removable external bridging conections between posts like on many speakers with two sets of posts, the connection is made internally with the bi-amp switch. Make sure the bi-amp switch is
not set to the bi-amp position. Leave it in the normal position and you can use both sets of posts if you like.