New to the world of cnc having recently got my 6040 up and running (0.8W spindle) I'm on the hunt for a plan of action for cutting some aluminium (1.5mm & 3mm thickness)

I'm thinking of buying some carbide TiAlN coated bits as I'm hoping to run it without flood but with an air compressor blowing air direct and a shopvac to collect the chips.* So I've heard that TiAlN coating would be best for that.

I'm looking at some cobra carbide bits from eBay.* Have people used/heard of these before? Recommended?
*http://m.ebay.co.uk/itm/2mm-Carbide-...222?nav=SEARCH

For the actually toolpaths, I'm using HSMexpress in Solidworks and am thinking that for general front panels (3.5mm holes.. maybe larger ones for pots and things 11mm or so.. and the outside cuts of the panel too..)

Is the right thing to do, choose 2d contours in HSMexpress and use a 2mm bit to cut everything? Or is drilling more recommended?* I suppose if possible I'd prefer less tool changes rather than actually speed..*