Snug them tight and just give them a bit more, no need to go crazy on them, the lower nut is a lock nut so should be fine. Why the 200b steering arms mate, someone has mentioned before the offset the strut giving more camber, did you get the locating rings for the bottom of the strut, or dont you need them with the 200b arms?

Edit: what nuts? the coilover ones? balljoint nuts are about 75lb for re-used nuts, 100+ lb for new items i think, double check that though.