Hi Camlink.
Firstly Congrats on your new place! I have to agree with the previous posts, I think that Perrystown is a great area to live in. Location wise; it's ideal and the 150 and 15A buses are quite good (as far as Dublin Bus goes!). I grew up in that area, but was forced to move away because of the current house prices, however it would have been my preference to stay there. While it is a mature area, the neighbourhood seems to have come full circle now, with quite a balanced mixutre between older settled couples and new young families. There are plenty of open green spaces for the kids to play out in and there is a great sense of community spirit with an active community centre. Best of luck!