Yah for sure would use non collapse hoses. I have the catch 42 catch cans and they are fairly big. Want to hide then and just have couple extra hoses showing.
I run breathers on a boosted application with out issues other than the odd oil smell. I did buy these but have not yet installed them.
http://www.42draftdesigns.com/Stealth-Oil-Catch-Can_p_289.html
DSS CF shaft here and lowered with Steeda Billet arms no relocation brackets and the distance is in the middle of the tolerances advised by DSS. You only use stock front bolts..dont use those factory clips on the rear bolts and make sure you use the pinion adapter. I dont even think you can...