Removing venting entirely is brutal, going to have to see how that feels.
Keep in mind that the normal dissipation rate is equivalent to venting speed w/o SO. It's like you're always venting.
Venting speed with or without Dedicated Conduits?
(Normal vent speed is not fast enough for me, which is why I get Power Grid Modulation 5/Dedicated Conduits perk as soon as I can... after I reach Technology 7 for the two most powerful hullmods - Augmented Engines and ITU.)
P.S. Also, because of how brutally expensive Safety Override is, I planned on sacking vents to get the OP needed for Safety Override. (Max vents is usually a no-brainer for most ships.) But now that venting is not possible, I may want to keep max vents... maybe. If I cannot fit Safety Override in, I probably will not bother with it.