Your amp is really good. Its the kind of unit that will work well with just about anything. I'm not familiar with your speakers, though. I just did a quick search and looked at some pics online. They appear to be pro speakers. Do they have regular binding posts, or are they 1/4 in.? That will definitely be a factor.
If standard cables will work, I'm with Tbromgard. I like Audioquest very much myself. You don't have to spend any where near $500 to get something that will sound great. Audioquest Type 8 is my favourite low cost speaker cable. I can't imagine you not liking it. I'm sure that there are other great choices, as well, but I only comment on what I have actually listened to myself.
If standard cables will work, I'm with Tbromgard. I like Audioquest very much myself. You don't have to spend any where near $500 to get something that will sound great. Audioquest Type 8 is my favourite low cost speaker cable. I can't imagine you not liking it. I'm sure that there are other great choices, as well, but I only comment on what I have actually listened to myself.