I wouldn’t put a $2k TT through a ifi Zen unless it was the newer 3. I would upgrade the phono stage first and see what kind of sound I was getting. What's the point of upgrading the TT if the phono stage is holding it back?
I had a Rega P1/2M blue combo going through a Darlington Labs MP-7 and it sounded great.
Phono stage is just as important, maybe more, than the TT/cart.