Across the family we cover pretty much the full range: Collegedad (born & raised in SoCoD) was in it all the way through; the Collegekids were in the Irish school system for a good chunk of primary & secondary (& did CTYI); I did a PG degree (UCD) and taught at TCD. Have friends whose kids are in 5th & 6th Year this year (and last year!) Lots of angst.
You should have the points to be credible for Oxford- did you consider that as an option?