No router is going to be able to cut steel. Sure, you can find people doing it on YouTube, but forget about it.
And forget about converting a machine to 5 axis. Adding two axis will make the machine much less rigid, when you need much more rigidity. A 5 axis machine needs to be designed as a 5 axis machine from the ground up.
Imo, the pilot Pro is a mid level hobby machine. Not the worst, and not the best.