To put this in perspective for me, an 0.4 index (gotten as low as +0.5), this question is directly related to par.
I have a decent chance of shooting par (increasingly less, I admit), meaning the course is manageable enough to be aggressive, if the course is less than 7000 par 72, less than 6800 par 71, and less than 6600 par 70. I find that I struggle to play my regular game at lengths longer than these.
I am not a very long hitter (just ask Martin), carrying the ball about 240-245 at no wind/level ground/75 degrees, and there is a point where the repeated lengths become a problem. I played in a US Open qualifier at Pinehills-Nicklaus in MA a couple years ago from 7250, and playing normal, I barely broke 80 (rating was probably 74-75).
When facing a par four of 440+, I can expect par about 50% of the time, but facing 7 or 8 of them in a round puts me at +4 just to begin.
Alot of this also depends on conditions, as a baked New England fairway in summer plays much different than a spring (wet, cold) or fall (windy, cold) fairway.
So, from 6700 par 70, NO
from 6700 par 71, Yes 1/3, NO 2/3
from 6700 par 72 Yes 2/3, NO 1/3
If you gave me less than 6500 par 72, I'd just say yes.