Nah. All those additional coupling connections (extension cords) wouldn't be good, even if they were hi-end. I had a 18 foot run to the AC mains from my rack. And for a while (about 6 months) I ran two of those wireworld power strips ($15 ea @ audioadvisor, I think) plugged in series. That gave me almost enough length to use the remote outlet. I would think the wireworld power strips would at least not degrade the ac link, like a regular extension cord, or Home Depot power strip would.
Then I got my VansEvers power conditioner. I thought about making an extra long (20 foot!) DIY power cord (I wouldn't buy one that long, new. it would cost too much) to run from the power conditioner to the remote outlet. I'm currently running a quickly slapped together one. I have to strain to hear any difference, if there is one at all. Buddy of mine agreed to make me a nice one. it's gonna be two independent runs of belden cable (one for + and -, which each's separate ground run) terminated with WATTaGATE connectors. That might be a little better, but we'll see.
I would think, the less connectors the better. It would also be abonus is everything was high quality. You system looks much better than mine, so it might be more "worth it" for you.
For you, I might get a power strip (vansEvers or Wireworld) with a detactable IEC cord. Then I'd buy or make a decent continuous IEC run from the power strip to the remote AC outlet. Less connectors, probably the better. And instead of a power strip with detactable IEC, you could use a power conditioner with detactable IEC.
Though $600 will get a dedicated line with proper grounding with most electricians. This is probably the best solution in the long run (no pun intended!).