When raising my 2 front jacks up 2 bolt holes, there was no worry about hose length as the hoses come from above. Maybe you're actually moving your jacks down 2 holes on the bracket?
Ah - that's a good possibility. When I have my belly off, running wires and such, I always tidy up and hydraulic lines are something that I tidy up as well. Maybe we do zip tie those to cross-members.