Depends on the 5x4. If it's a field camera, you don't need to get into the scaffolding jobs.
I use Manfrotto: 055PROB legs (older style without the up-and-over centre column), a ball leveller thing, and the MN410 geared head. The leveller is great because you don't have to faff around getting everything dead level when you set the tripod up - just get it roughly right, and then use the leveller to fine adjust. That way, the bottom of the head is level, meaning no need to readjust stuff if you swing around for another shot from the same position, or when doing multi-shot panoramas.
I find this setup great with my Shen Hao 5x4 (and Bronica ETRS), but it wasn't man enough for a 5x4 monorail of the non-flimsy persuasion (5kg MPP beast from the 60s or 70s). With the MPP, there was some flex in the head which translated into vibration - I felt that things would wear out prematurely if I kept using it.
Goes to a good height - I'm 5'10" and don't have to extend the legs all the way to get the ground glass at loupe/eyeball level. Even less extension when used with the ETRS and WLF. At 4.5kg, it's a hefty tripod, though, which means 'car photography' and short walks.