You'll do just fine with the Ittok LV II. There is more of a difference between the Basic and Ittok than the Ittok and Ekos.
I use a Dynavector 10/5 MC with the Ittok. You can use your same armboard if staying with Linn. Also, so far, the the lengths are the same for each arm, so a custom Mint LP will be an excellent tool for mounting a cart. If you switch up to the Ekos, you can still use the mint LP.