THORENS: TD 160 tweaking

I am thinking about picking up a Thorens 160 as an upgrade to my rather knackered Project 1.2. It seems like it would be a gentle intro to 'classic' TT meddling as it should be easily retrofitted with a better tonearm (SME/Rega cutouts readily available on eBay) and rehoused in a nice heavy plinth.

What 'bang-for-buck tonearm should I be looking at: Rega/Origin 250? SME 3009? For cart I'm thinking Denon 103(r?).

I'm also considering going the Lenco route but thinking that (to start with, at least) a Thorens deck will be easier to mess with"