I normally use a 1/4" bit, 1/4" deep at 200ipm with good results. I'm working on a project that will need something smaller to make a small corner radius, cutting wood, likely maple or cherry for interlace/knots. I think a 1/16" diameter end mill is as small as I want to go. I use a Bosch 1617evs with the standard 1/4, 3/8, 1/2" collets that came with it.

Do I need a precision collet?
A downcut will leave a lot less fuzz, but does it add too much to the risk of breaking the tiny bit? Straight cut?
Advice on feeds and speeds will be appreciated.

Thanks,
Steve