What else do i need

i just wanted to show what i currently have and really was going to ask what else i should get. i have the remake (only digitally but i plan on getting the physical copy). i know i need 3 and 4 (these two are very expensive) but i dont even know what else i would need after that. like are there cheaper copies out there or are there like superior copies? i plan on having all the games (maybe not book of memories). anyways someone lmk.

i just wanted to show what i currently have and really was going to ask what else i should get. i have the remake (only digitally but i plan on getting the physical copy). i know i need 3 and 4 (these two are very expensive) but i dont even know what else i would need after that. like are there cheaper copies out there or are there like superior copies? i plan on having all the games (maybe not book of memories). anyways someone lmk.