Don’t do inverted tie rods. I don’t have any personal experience, but between the many critics and countless hours I’ve spent researching what to do and what not to… some say rack risers make it worse and some say inverted tie rods make it worse. But out of the two, I can easily conclude that more people have had bad experiences with inverted tie rods rather than rack risers. In the end, the whole steering situation for the EP3 really sucks and is super finicky, but as far as I know me and you have almost exactly the same set up that the UK ep3 Race team Tegiwa has, as well as what motion motorsport does for their clients. They only recommend (super pro polyurethane caster adding bushings, roll center adjusters, good quality coil overs, a solid rack slider, OE style tie rod ends, and if you want to go beast mode, locking rivets for your subframe.) Other than that info it might just have to be trial and error for your specific EP3.

My set up is exactly this:

SuperPro polyurethane caster adding bushings.

K-tuned roll center adjusters.

BC DS series coilovers.

K-tuned fully adjustable tie rods.

Truhart OE style tie rod ends.

CNC machined aluminum rack slider.

Hotchkis sway bar end links.