As ChainsawAsh stated - ‘The version you linked will be fine for all current Prequel Trilogy & Original Trilogy projects’.
IF you’d like to acquire Sequel Trilogy projects too… then yotsuya’s recommendation of the ‘Skywalker Saga’ set on blu ray will suffice - or buy the Sequel Trilogy blu rays individually - whichever you prefer.
(If you have a 4K tv then you may wish to opt for the 4K UHD versions of the films? It is up to you.)
Fan Edit / Preservation Forum Rules and FAQ
‘No 6. Before obtaining any fan edits, you must be in ownership of the official retail release.’
^ So owning the official digital downloads of the films is also acceptable for acquiring the respective fan projects too.