Has anyone made a Bridgeport mobile and if so, how have you done it?

I am thinking seriously about putting a Bridgeport on wheels since I
will be moving a number of times in the next few years.

The proposed design would be a frame made of angle iron (3.5 x 6.0 x
0.25) and the wheels (8 inch - 1050lb rated, 2 non swivel, 2 swivel)
will be mounted at points extending beyond each corner under the
frame. This extention is to insure that the wheels when swiveling do
not reduce the stability of the mill to less than the effective
footprint that the base of mill itself has. The wheels will raise the
Bridgeport 9.5 inches above the floor. When the mill is in the
location for operation, the Bridgeport will be supported by leveling
feet thereby removing the mill's weight from the wheels.

Several questions come to mind.

Does anyone see anything that wrong with this design?

Like at what end should the swivel wheels be placed...should they be
placed under the front of the Bridgeport or at the rear of the
Bridgeport?

Is the elevation of the mill by approximately 10 inches going to cause
a problem during operation?

What color would you suggest the racing stripes be? :)

Any suggestions or comments are welcomed.

Thanks in advance,

TMT