Utter shit, cables dont slip a bb7 is just as good as a hydrolic hop mono trial or something similair. As for vees a decent setup and correctly installed there just as good if not better than maguras. Explain to me why vee's are shite? and why cable disc's slip so much? what experiance have you had with eaither or any? Because i know speaking from experiance that cable discs dont slip and vees are excellent
As for your bike mate go for it. Experimenting dosent hurt (only your wallet) i was reading the old school thread the other day and from what i can gather they all uset to ride xc bikes modified and with the seat down. As for what parts you'd need is probaly a decent set of breaks. Avid sd7's are cheap im good, ive got one on the front and its amazing so much hold and power and im preety sure one on the back would be awesome aswell. Any set of ridgid forks as long as there stront and maybe grind your rims . If youve found a decent gear then great but you'd probaly save weight a packet changing to single speep
But with all the money you'll have spent and the time and effot, its probaly better to try and buy a trials specific bike
Good luck if you decided to stick with your Carrara