You can drill certain grades of aluminum without mist or flood coolant within the parameters you stated ( thin wall !). You will not want to do this with your boring block because of the fixed rpm nature and it could be cumbersome when "pecking" and the limitations on shank size.
You will want a carbide drill designed for drilling non-ferrous (Kennametal, gerung,etc.), most have their own proprietary coatings. You will also want a drill with a 130~135 degree split point design for accurate centering. Aluminum drills typically have larger flute gullets and they are polished to overcome the "sticktoittoness" inherent to the material.
You will have to mount the drill in a collet sized for the shank and run in the electrospindle - small diameters (up to 5/16") should be fine, much larger and you will want to interpolate the holes with a nice aluminum router bit. A 3/4" drill in a router electrospindle is not a good idea. The thrust is much greater on drills once you go over 3/8"~1/2"
It is ideal to run mist or flood coolant, but in your conditions (thin wall) you should be able to get the feed and speed correct to drill through with light pecking. Your tooling manufacturer can assist with that but keep in mind you will be working in a different "power band" than what your normally used to.
You will also need to fixture the part to the machine a little better than just relying on the pods. Mushroom clamps at a minimum - maybe a vase type fixture depending on the condition of the material.
If you have a cam program you will want to select very light pecking (.02~.05 in .5~1.2 mm) if no cam you can create a peck cycle within the control using a sub program and or incremental Z moves and a jump statement.
All of the above is applicable to 6000 or 2000 grade aluminums, 5000 grade would require different strategy.
Hope this helps.
Mark T.