Thats the advice from a veteran. But honestly as a new player, you will enjoy the game way more with 4ssr. There are examples of people doing ragnarok difficulty with full rare team, so there would be not much of a problem with difficult content as long as you keep playing for a long time. Its just that to make the best team possible, you need the eidolon.
Thanks for your answer!! I was about to pick the 4ssr account... because its sounds more fun. I understand that with that eidolon i'll probably have the better team, but my goal isnt the best possible team even if its desirable.
Maybe i'll play with that eidolon account too and see what i'll get in the furture.