most everything will be done in hydraulic hose. once installed and leak free im hoping i never have to mess with anything. i know DOT airline and fittings would be easier, but this pre-made hose comes in 12", 18", 24", 36", 48", 60", 72", 84", 96", then all the way up to 144". ends already on them. they range from 10 to 40 bucks. not that expensive seeing that the push to connect connectors are at least 10 bucks a pr....locally they cost me 12 bucks each. most of the sizes of hose i'll be using will cost under 20 bucks each and the ends are obviously never going to have trbl.....and i think 3500 psi will do.