There is no aim on IA gear at all. You must be referring to accuracy which is important, over 100% you start to ignore the targets armor from what I've read. My sniper is sitting at about 103% accuracy, 40% crit, 70% surge and I do well in the end game ops. That might give you a general idea for the PvE side of things. I wouldn't do any swapping of mods on any gear until after the update comes out, right now the plan is to boost the rakata mods but who knows where that change will end. I would be pissed if I changed all my columi and found out later the stats were going to be buffed.