Personally, I wouldn’t do that.....as a matter of fact, if all your components are from the same manufacturer, you would have an even better chance of success. I don’t mix anything...cables, etc. Any benefit from trying to deal with problems by gettling something with an opposite defiency means you don’t have the benefits of either. Modern components can be found with excellences if they use s/s or tubes.
Phono/preamp/amp chain. One of them tube the others SS. Which one?
Perhaps any one would do if done right. What would be your preference, generally speaking? Let's assume MC cartridge. This move could be permanent or could be the first step on the way to full tube system. I would probably choose the phono.