Ahh, bad use of language on my behalf.. I was trying to say... "theya arn't amazing, but they are good" but endid up saying "they are good or possibly amazing"
I did consider that... and the answer is... stumble into them on the first attempt. For this build that shouldn't be a problem. The sorcerer might want to hang back a tad... But really I don't think most Duo groups could solo any of the high end stuff on their first try if the quest was not known to them.
I was torn between Quicken and Maximize and putting points in spot over concentration. I also looked at trying too eek out one more point of Int so I could go full spot. Its a tough call. So I agree it is well worth consideration and I think comes down to what you want in your rogue.