Hi folks,
It is very doable - just get a motorbike !
I live in Swords / work Stephen's green and got fed up even thinking about buses/driving in (used to drive while my wife worked in town too) but best time leaving Swords before 7:30 would be about 45 mins (plus paying 125 euro monthly for parking and having to race out to beat traffic etc!)
Now leaving on bike my worst time is 45 mins on a really bad day (high wind/floods of rain/14 crashes on way in ......)
my average time is 30 minutes leaving anytime and my quality of life has improved immensly - I can get up @ 7:00 .... shower etc, breakfast/ coffee / paper and be at my desk for 8:30 with 13 miles commute in between !! Parking is free, insurance and bike costs are less than I paid a year on parking.
And getting home is the same - leave anytime you want and it's still max 35 mins.
try it and see !!!