Hi Shirls,
I travel to monkstown from lucan every day. Im kind of lucky as my shift either starts at 7.30/8am or 10am. The n4 can be a nightmare at the best of times, then getting on to the m50 is sometimes tricky. After you clear the m50 entrance its a pretty clear run at 7.20am. It normally takes best part of an hour to complete the journey. For 10am shift it takes 40 mins/45 mins. However to get to Sandyford for 9 would be pretty tough. you need to be on the n4 by about ten to seven to avoid being stuck on it for an hour. My worst ever time has been two hours complete journey, left at ten to seven, got in at ten to nine. there was a crash on the m50. I listen to 103.2 FM on the way in, and the journey time they give from the spa hotel to palmerstown at 7.15 am is about 21 mins. Hope this helps, if you want any other info you can pm me.
Lucylou