I have an industrial 3 axis nesting CNC with 12 tools toolchanger with ISO30 ER32 collet with 9kW spindle

Am wondering what bits to use to quickly drill holes such as 5mm system holes, and 3mm, 6, 8mm holes for dowels in chipboard and plywood.

Do I use boring bits meant for boring machines that has a 10mm shank (D shape shank),
Or do I use single flute end mills or other bits.
Plus what RPM is appropriate for the bits, as the the main tool changer spindle is considerable faster than a boring block. note: I don't have a boring block.

Any ideas? thanks.