Additional thoughts --
I see what you mean about the bump steer. That's why the tie rod has 3 parts rather than just being solid. As the suspension cycles, the distance between the wheels changes due to the swinging of the A arms. With a solid tie rod the wheels would be pulled to toe-out or toe-in, depending on the situation.

It seems difficult at best to keep the "flatness" of the three piece tie rod at the stock level and lift the front end. If you put brackets under the idler arm to drop it, you have to do the same with the pitman arm or lower the steering box. It may be too much offset for the arm and to lower the steering box would be a nightmare due to steering shaft changes.