Vti front brakes won't make a difference, the facelift EJ9 had the same brakes as a vti on the front (262's). I wouldn't bother changing that master cylinder for that. Standard prop value will be fine. IIRC you can't use the 1" MC without the associated booster. Non ABS lines are fine. I'd only go 1" MC and servo if you've gone to 282s up front. Even with that, you can use the standard lines and prop valve. It's only when you start messing about with prop valves if you're doing a rear disc conversion. I've done this all on my own car so if you have any questions, just ask!