Dremel and bit recommendation

Hey everyone,

I'm going to be milling out a chassis on my brother in law's mill, but I only have two weeks to do it (it's in another province, so I only get access to it when we head out on vacation). I envision there being some additional touch-ups to do afterwards. I know some people have used a Dremel and milling bits, so I'm looking for recommendations on which Dremel and which bits to buy (a mini-mill isn't in the budget...yet!). This is for 3/16" 6061 aluminum.

Thanks!

Chris