Two things:  For a Zone/Press, would you say, basically, that the ratings you are going after would basically be the same as for the press with a slightly lower emphasis on Stamina?

Secondly. . for the IQ issue, I suppose to run a combo defense you would A:  Want to pay more attention to WE, so that despite spending more minutes on practice, the players still improve.  B: Pay more attention to the "Good student/'Iearn quickly' messages in scouting, and C: Pay more attention to the high school defenses of the recruits to get that little head start? 

Also, in a zone/press, if you were dividing, say, 25 minutes practice between the two parts of the combo, you woudl probably want to devote more of it tho the press?

Always devote more time to man or zone when running a combo because they are the primary defense and the press is secondary. Also, look for players that would best fit your team offense/defense. Don't pay so much attention to high school sets that would be a bonus. Also, I would always look for guys with higher work ethic because given the slowed rate of improvement it will obviously give u a better chance of achieving full potential of your player.

though it may sound oxymoronic, perhaps looking for guys who don't have 6 or 7 highs - maybe some guys with good base scores and low pot so you can max those early and move all those minutes to where they'll do some good...

So, what I am getting so far. . . .

Work ethic(Which starting with my first BIG class next year I plan on emphasizing.) More practice time for zone than press.  Perhaps some people who are closer to full potential to start.  Now I just have to figure the rating set best for a triangle zone/press.  Which to my mind make me think "Recruit for a triangle press and it should still do well with Zone?

You will still need to look for good rebounders and don't go for low potential guys unless they are really good i.e. can start for you right away.  Ath/Spd/Def are good for any set as well (which is where I would start looking when recruiting for press). Though Athleticism is favored less in triangle, it favored highly in the new engine for any set imo and should still be a high priority for all positions.