Is there any concern about increasing gc_grace_seconds from 5 days to 8 days?

[Sergio]

Hi guys!

I just wanted to confirm with you before doing such an operation. I expect
to increase the space but nothing more than this. I  need to perform just :

UPDATE COLUMN FAMILY cf with GC_GRACE = 691,200; //8 days

Is it correct?

Thanks,

Sergio