Pros and cons of each?
I would have used cultural if you didn't have to lose your BP focus (it's a special type of focus for frozen venin which is very good).
Cultural : More expensive plat wise but in general there's less competition for it. You can also get ~T3 raid gear from lower tier raids.
Edit: It should be noted with new expansion in the next 2-3 months cultural might be the better option if it can save you dkp since the BP focus will be worthless.
can both augs for cultural be removed safely if i get cultural now then switch when new expansion comes out?
Yes, but there's no guarantee that the aug slots will remain the same for cultural.
ah very true. well my dkp sucks anyway. mainly from tower rots 3 or 4 years ago, yay for breaks then getting rots. So i guess i wont worry about cultural now. thanks for the infos.