If you hold your cursor over the overview, the ship uncloaking always appears at the bottom first. So if you have your cursor over the place where the ship will appear you can reduce your reaction time dramatically.
That said, I only ever aim for <2 secs on a travel ceptor. the rest goes into the tank to counter smartbomb camps (e.g. from memory my travel-Ares has an MSE II, a medium F-S9, a T2 invuln, and a DCU II - the rest goes toward alignment and fitting).
Yes ipso facto I fit a 1.98 sec align time with hyperspartial T2 rigs. The 10-12+ Au. warp over two or three systems (average range of coordinated defense intel) gives less organized reaction time and gives those few extra critical seconds in low sec bouncing off sun to avoid smart bombers.