I was brousing through previous messages for the basic bits I need for my new router and just wanted to make sure I'm getting the right stuff. I jumped on that Dewalt 621 reconditioned deal Amazon had so I will be getting the DW621 soon. This has 1/2" shank right? I know I need the 1/4" spiral upcut bit, should I get the 1/2" shank or 1/4" shank? I figure the 1/4" because it has a larger cutting area(1") part #5146. I'm also planning on getting the 15pc Aniv. kit in 1/2" shank, part #8377. Would this have everything I need to get started?