I just ran around 90 feet total length for 6 sets of hoses to the vac motor for my vSets (2 sets of 1/2 inch hoses and 1 set of 3/8 inch).  It was a 5500 psi rated 2 wire hose.  I had to buy fittings (6 sets) plus 3 male couplers to plug into the tractor ports.  I also added 12 feet of 3.5 inch vac hose with clamps.  Total bill was ~$650.