For those who have air bags and a manual leveling system there is a simple answer. Carry enough blocking to block up the corner of the chassis (at the jacking point). Then dump the air from the air bags and jack up the axle. A small jack is sufficient to lift one end of the axle since you are not lifting the bus. If you make sure your blocking under the chassis is secure, there is no risk with the jack. With a front axle flat, you almost always need to drive it up on a block to get room for a bottle jack that has enough lift height. The stubby jacks will only lift it high enough to get a regular height jack under the axle.
AFAIK, the only jacking points on my MC-8 are part of the suspension that's not effected by airbag height. I'm not sure of where else it's OK to jack it, but the manual shows these (suspension) locations.