Hello Discgolfer, welcome to A'gon. I havent tried disc golf yet but it looks like a ton of fun. I bet there arent 700 old farts in plaid milling about on the course either.
Well, in case you stumble over a pile of pirate loot on your way to work, you can plan on about 5 times the cost of the 7se's for entry into full range speakerville and about the same for "your next amplifier upgrade."
This may be more applicable advice. As your system moves up in resolution and capability the more important cabling becomes. I can attest to this as I went through major cabling changes recently.
You can buy an inexpensive cable that performs well now but could show its weakness later if you upgrade. If you dont plan on upgrading, a decent but inexpensive cable is your best choice.
You could go ahead and get decent cables now and keep them through your next few upgrades. I think this is most logical if you plan on upgrading.
Having said that. B & W recommends Bi-wiring. At the very least, replace the inexpensive factory jumper plates with some quality jumpers. I wouldnt recommend any silver for your speaker wires, as silver has the ability to over emphasize the upper octaves. My advice would be look for nuetral speaker cables. Alot of times what is perceived as "bass enhancement" is actually "treble reduction" or vice-versa. Similar to what Rsbeck said. Cables cannot enhance or amplify anything, they can only limit.
So long story short, yes they will help your system performance, but ultra-high-dollar ones can only be fully realized with ultra-high-dollar systems. Know your future target for your system and buy accordingly.
Ultimately I dont have a vast pool of knowledge on which brands sound like what, but, I have been pleased with my Analysis plus (moderate price/good performance) products. I was also pretty happy with Signalcables (inexpensive/acceptable performance) speaker cables, especially considering the price. Maybe some of the other A'goners will help out on this one.