That is good info regarding intel – but I think it is more important to tech rifles asap and then generate cash to upgrade units.
Also it may even be worthwhile to try and tech Corporation for the extra trade routes after we tech rifles and switch civics to Nationalism (this should only take 3-4 turns).
The fact is, Sancta can raise their Espionage to match any increase we do pretty easily. Also we already have good intel where it matters most from our spy in the valley. After our initial attack, however, I think diverting more commerce to intel may make more sense. But still, should this really be our team? We, by far, have the best multipliers with respect to technology – so if we have extra commerce that is not needed for cash upgrades we really should put it into science. Team Cav is probably a better candidate to boost ESp rates.