Upvote:1
I think get the Schengen visa first since that is your first destination. Once you have it, apply for the Ireland visa, as you'll have the required visa for the country you are coming from (Netherlands) when you are going to Ireland.
Your travel history means you will likely be approved for both visas, but if your personal or financial circumstances changed since last time then you might not be approved.
I admire your commitment: it's a lot of effort for a short visit.