I checked the guides
and i couldnt find anything
atm i can have 146 dex on my rogue
should that be enough?

Usually adviced not to go above 130.

Personally I am going for 100 - 120, and I'm doing allright.

i miscalculated
its only 131 dex i would have
but that would still be enough?
and now i should pump str or vita?

str.

only put vita at the beginning of the climb, doesnt give much at the end, as it adds the amount of base vita you got as life each lvl

so if you got 60 vita from lvl 1 you end up with 4260 at lvl 71

if you go with 50 vita till lvl 50 and then pump it to 60 you would end up with ~3700hp