I absolutely agree @tnan123 .Considering that i'm working on this piece too,i can say few things.Clarity is the MOST important component of playing this piece.Especially in ,,pesante" part.Rach loves fat chords.If you drop a single note,the concept of particular part fully changes.I've been working on ,,pesante" section really hard to polish it and i guess i'm reaching the desired clarity
As for tempo,it needs to be played definetly slow,i'd say triple times slow.Especially in the middle part.Pesante means ,,heavy",so it should be played as if you are lazy to take the hands off the chords.The melody becomes more beautiful and listenable and,of course,clarity comes naturally.
And the last thing,lower chords in the first part,after the main movements,would be better to be played as if you were caressing them or transforming the ,,bell ringing" echo into playable piano notes.
Good job ! And waiting for your later recording of this piece
