I have the Terra C 105. Picked it up for a Billy bargain of about £1200 last year just before bike prices went through the roof.
I have mine set up as a winter road bike with aluminium mudguards and 28mm Conti 4 Seasons. Swapped out the wheels for some Farsports carbons and made a few other changes to get the weight down a bit.
Frame is very nicely finished and the bike was well put together. The compact geometry means I have quite a bit of seatpost on display (I’m 6’4″). Could have gone for the bigger size but it would then have been too tall at the front for me.
Tyre clearance is huge so I’m sure you could fit a very nice big tyre in there.
Feel free to message me if you have any questions.