Munstermuffin, it's a talented bunch of players. Off the top of my head, Andrew Conway, Tiernan O'Halloran, Andrew Boyle, Brendan Macken, James McKinney, Gareth Quinn McDonagh, Jordi Murphy, Martin Moore, Niall Annett and David Doyle all featured on last season's team at various stages and all return this season. Others like Luke Marshall and Eoin McKeon have featured already/will feature for their provinces this season. I'm a big fan of the possible scrumhalf Peter Du Toit too. It's fair to say this will be an experienced team with the bulk of it's talented players in the back line. The pack is more of an unknown quantity.
I'm not familiar enough with the other squads in the 6 Nations to form an educated opinion on how Ireland will fare but this age group have beaten France (with a hugely weakened team), Wales, Scotland, Italy and Australia at u18 and u19 level. England's u18 team a couple of season's ago crushed everyone they faced so they'll probably be very strong this season.