I keep hearing people recommend not using a guide to get 100% completion on the first time through, but I've done that with Persona 4 and 3 and I completely prefer it that way.
Given the length of those games, I can't imagine beating them twice back to back. Otherwise, at 2-3 hours every other night, I'd be playing P5 for 3 months plus, which would make me hate it. I platinumed P4 golden by spreading out my two playthroughs 3 years apart, and it was a joy, and reminded me why I loved the game. My OCD tendencies would also not let me not see every S-link in one playthrough, so there is that.
So guide if you want completionists, I support you!
Also, amazon shipped my special edition, and it's USPS so I should actually receive it tomorrow. UPS keeps claiming weather delay on my shipping and doesn't bother to show up, even on nice evenings. Punks. Best of luck to all!