I've ordered some HSS drills so I'm going to try that.
Here is some more cutting data:
Full slot roughing:
.5 TiALN 4fl flat 1.75 roughing endmill
.5 WOC full slot
Very good cut with no chatter going any faster or deeper starts to chatter.
3.15 6 insert Sumitomo coated carbide 45deg face mill
This cut is smooth and leaves a beautiful finish. The depth can be increased some but going down to .05 DOC stalls the spindle. At 1.00 WOC you can go down to .01. Although keeping to .005 or less leaves a better finish regardless of WOC.
I'll have another video up before too long.