It’s one of those things were it probably depends on what your other VIPs look like. How many other VIPs do you have? Do you have all of the non exclusive VIP VIPs? Do you have multiples? lvl 20s? of all. Is it something you really just want/ “need” to have? If so just do it who cares.
I would take that all into consideration but It isn’t going to be any better than your other VIPs so if you don’t have too many and are still collecting them I would pass on the 20k pack your LPs would be more useful sticking with 10k packs.
However if you are in similar situation to me. I have all the non exclusive VIPs already, almost all at level 20 with multiples too. Acro is the only VIP i don’t have, I wouldn’t mind having it from a collection stand point. Even still I won’t spend the 20k, Ill get it eventually from a 10k pack.