I had a setup similar to yours. I had a Majik and an LK100, biamped to a pair of Keilidh. This sounded great. But I foolishly blew the Majik amp last month.
Instead of fixing the Majik, I bought a used Kairn Pro preamp. And I also bought a second LK100. So now the Keilidh are biamped from the two LK100s. The change in amps and preamp made a remarkable improvement in sound quality. Truely remarkable. (Note I'm also using Linn Silver ICs and Linn K400).
Now I'm going to convert the LK100s and Keilidh to active. From everything I've heard, when dealing with Keilidh or Ninka, the money is better spent going to ACTIVE biamplification, rather than PASSIVE triamplification.
In addition, I picked up a used Mimik, and the sound is now all the better. I have the Mimik IC'd to the aux input on the Kairn Pro, and my Sony 400CD changed IC'd to the CD input.
So, if I were you I'd sell the Majik (get $450?). Get a used Kairn Pro ($750?). Then buy a used LK140 ($700?) or LK100 ($450), and connect them to the Ninka's tweeters. You can then hook up your present LK85 to the mid/bass on the Ninkas. Then have your Linn dealer convert your amps and speakers to active (which will probably cost you around $450 for the active cards and installation). You'll be amazed.