Order of Operations

I’m in the midst of upgrading my vinyl playback. Currently I have a U-Turn Orbit with a Denom DL301mkii and a schiit mani. Yes I understand that the cartridge cost more than the turntable. And yes I also understand that the Mani’s 47ohm load isn’t enough for the cartridge. I have an ifi Zen arriving tomorrow because I’m curious if the different loading options will make a difference, but I’m not tied to keeping it. The ultimate goal is to upgrade to a “forever” setup and I like the Technics SL-1200gr and I’d like a PS Audio Phono to match my PS Audio Stellar Stack. I had a bad prior experience with a Rega P1 (wiring went to crap and couldn’t get a warranty repair) and as much as I like the VPI Prime, I just don’t want to dedicate that much money to it. 
So here’s the question. Knowing the U-Turn and the phono stages are going to be sold at some point, which would you replace first - the turntable or the phono stage - knowing it will be 18-24 months before the other is replaced?