Thanks for all the good info. Especially TC-TX and CB900F. It worked perfectly. I was very surprised at how easily the safe moved on the plywood. I ended up using 4 - 1/2" solid steel round bars rolled on 1/2" plywood. The plywood did compress slightly from the weight. The trick of angling the bars to turn the safe was key, thanks TC-TX. It literally started to turn itself with almost no effort. It took me longer to empty the darn thing out and put all the stuff back in that it took to move it. A few suggestions for anyone attempting this:
1) Plan, Plan, Plan. Make sure you have EVERYTHING you will need very handy. It really helped to have a whole bunch of different sized wood blocks. 1/2" thick, 3/4", 1", etc of all different sizes.
2) Have a REAL sturdy pry bar. I used one I borrowed from my neighbor, about 4 feet long, made out of an old Model A drive shaft.
3) Be patient and coordinate every move with your help (Mrs. NRA4LIFE here).
4) Do not EVER say out loud "What was I thinking, buying a safe this heavy?" Your brain will now automatically repeat that approximately every 30 seconds.
Again, thanks for all the tips.
His logic was good; you can always fix the safe, IF you are still around. 
