As far as I know, "Eer" in
Eero is prn sort of like "eer" in beer, and "o" is a short o-sound. So, EER-o is how I'd say it, and
Aki would probably be prn AH-kee in Finnish. Personally I think it's lovely to see Nordic/Scandinavian names used by non-Scandinavians and by Americans in particular, there's so much americanization going on here so it's only fair that the name import/export goes both ways. :-)