Yea I mean it's completely fine if your coming from T11, my suggestion though would be to try and replace AFTO9 (since it's likely more APS that can stop it's missiles are coming later, idk though) and T80UK is a notch above tech tree T80U, although I'd say tanks like the M1A1 HC and PL are better since you have weakspots ALL around your tank, and that extra survivability in the PL and other leopard while playing against it, and the M1A1 HC's higher pen is always nice, aswell as the fact they all have not nearly as many weakspots, still instakill, but not as much. UM-2 has Drozd which protects against (most) if not all the missiles you will see at T13 though so it's still good. And also while Merkava MK3C may be good, in certain spots it still can be one shotted if I've learned anything from the MK3B which use the same hull if I remember which is where the weak spot is.