I'm currently running a Haas Super Mini Mill with a 15HP, 10,000 RPM 1,200 IPM

All of my work is 6061 alum bar stock,

most of my cutting is done with the RPM running in the 6,000 to 10,000 rpm
other than some 5/8" ball end mill roughing, most of the my cutting is a 1/4" ball end mill and also lots of detail cutting with a 2mm ball end mill

I'm looking at a second machine, and I've found a Haas VF-1B VMC, with a 20HP with a 2 speed gear box and 1,000 IPM....
the the issue is that its max RPM is 7,500

In your opinion would I be taking a step backwards by going with a machine that has a max of 7,500 RPM?

The things that I like about the machine is that added X,Y,Z movement, and the 20 spot tool changer, verses what I have on the mini mill.

Thanks,

Kent