Irish naturalization through Irish association

[satbIndia]

Hello Guys,
I have read that Parent/s applying for Irish naturalization through Irish association (Irish child) takes a long time compared to applying for naturalization after 5 years of reckon-able residency.
However is there anyone on this forum who had applied for naturalization through Irish association (Irish born child) and who can share their experience with me?

Further what start date should we enter in Residency calculator? Is it the one you entered Ireland first time or the one when you get stamp/IRP/GNIB from Garda station?

If it helps then my wife and I are on stamp 4 and I entered Ireland on Greencard (Now called critical skills work permit)

Thanking you in advance