I think I would tend toward turn key - that way I could enjoy the fruits of an established system while devoting my energies to planning my permanent place, and cherry pick what I like about the turn key place, what works, what doesn’t, and so on. That way I will have a better sense of what I will want to do on my permanent property. It also means I don’t have to invest a bunch of my own coin into a system that the landlord will mow when I leave.
All that said, I would also want permission to add to, experiment with, tweak etc. the existing system.