Lol, I love it when the cutting-springs boogie man comes out
Its perfectly safe to cut springs, nothing wrong with it at all!
If you buy some 60mm lowering springs, the springs will still be shorter than standard, just like a pair of springs that have been cut down are.... in other words, theres no more risk of the spring jumping with a cut spring than with a lowering kit spring. All you have to do is not go mad and cut too much off, just start with one coil and see how it sits

A cut spring WILL seat properly- If we're talking Escorts, the rear spring isn't a 'flat-top' design, so all you have to do is cut a coil off and your laughing. Cost- zero.

Get out there with an angle grinder and cut a coil off each corner