Just a side note regarding EPR gauges in the 707:

I once saw a cockpit-video on youtube of a 707 taking off. They pushed the throttles forward, but all the EPR gauges showed different readings (one didnt move at all), while the other gauges (N1, N2, etc.) showed similar readings.

So I can imagine, that the EPR-gauges in the 707 weren't accurate at all. Apart from that, the EPR-gauges in the CS707 move the same way as in the video, first they wont wake up to move, and as you push further and further the needles suddenly almost "jump" to high values. I love this feature!

I normally take off with a EPR of 1.9 to 2.1. For me, this is a pretty good setting, as she rotates and climbs nicely. And the 707 was a ground gripper, it needed loooooong runways to take off. And thats why Boeing built the 727, so they could take-off and land a jet everywhere else where there wasnt enough runway for the clunky 707.