That stem looks great, it looks like a good choice to play around with bar height too.
Yeah the cost of a brand new disc set up is a lot, so going 2nd hand looks good. I am not even sure I want to commit to a rear brake...
...so been offered a BB5 for a good price (thanks ogre ) so think that is what I am going to go for.
I ran the older version of those levers with my vee. They are great
What size rotor should I get? 180
And pads? Standardones, I really have no clue. Never had a disc before
A bit too long Cheers.