+1 on using steel tube for risers and a pallet jack. I'm tall, so all of my machines are outfitted like this. Makes rearranging things much easier.
While I won't debate the merits of using rollers, I would recommend getting a really good "pry bar" for making the initial and incremental lifts for getting the machine up onto whatever it is you're trying to get it up onto.
Most prybars are straight and therefore require a pivot block on the floor and close to the machine base to generate lift. I've had these either slip/slide or even crush - not good.
I then read about "Johnson bars" - heavy oak handled jobs with a steel lip and wheels. But these seemed more for moving machines than for lifting.
Several years ago, I had two machines delivered by a pro rigging company. A VN 2RQ and an Axelson lathe (8,000#). They had these bent nose rigging bars and with just two of them, they moved and positioned the Axelson in five minutes flat (I'm talking about a 15' move across a concrete floot).
It took a while, but I finally discovered the place that makes and sells them. They are called a "rigger's nose bar." Here's the link:
http://www.easternrigging.com/prybar.htm
I bought a 60" straight tip one and have yet to find anything I can't lift with it. I have a friend that's a retired tool and die maker. I never knew that he had one as well. He's 83 years old and together we moved the Axelson about five feet with them. Once we got a rhythm going, it only took ten minutes.
Brian
Taxachusetts