As someone who moved to Portugal in 2015 and still loves living here, I can offer a bit of advice.
Americans & Friends in Portugal is the Gold Standard of Facebook pages. It is all about obtaining residency and is excellent. They have files on their page that cover many, many aspects of moving and adjusting. Deborah Dahab has an excellent page on emotional adjustment and Expacity is a paid page with podcasts on a number of subjects. I actually did one for Amy about living in Cascais.
Dennis, I just realized this post is from you! Great to hear you might be thinking of taking the plunge.
The other Facebook pages are fine, but if they disagree with AFIP, don’t believe them.
And, yes, the bureaucracy is pretty awful and has been even worse in the last 2-3 years. My residence card expired last September and I have no idea when it might be renewed. It doesn’t cause me a problem here in Portugal due to a decree that says it’s good until June. But, traveling outside the Schengen, other than to the U.S. is a bit risky.
But, day to day life is still grand.