Congratulations on your marriage! I hope you will be very happy together
I have no personal experience to offer here but after a little rooting around on this site there seem to be several threads and conversations which might be of use to you. I've homed in on this one - Citizenship Through Marriage started by
@shawnjames on September 8 2015 - and in particular Post No.10 by
@nicoenarg which seems to sum everything up concisely. It's nine years old and some of the other posters including the OP seem a little screwball and I don't know if everything still applies today but Post No.10 seems sound.
I'd suggest you spend a little time searching for other posts on the subject in other threads here on this site. Search terms like
marriage citizenship should get you off to a good start. Reading more recent messages will help you confirm the way to go. Good luck and congratulations again!
P.S. All the Church-married couples I know in Argentina, including some married very recently, went through their civil marriage first and then went on to their wedding in Church. I assumed that people needed to get a civil marriage certificate before they could be married in Church - isn't this the case?