Details Geek Needs Help!

Two things going on at Casa Giese: Isla's nursery and the "office/playroom"

First: I had a burst of get-it-done energy last weekend, and tackled Avery's old changing table with a new coat of paint. It's a small, vintage sideboard we picked up in Virginia for $25 before Avery was born. It serves perfectly as a changing table. I was ready to see the shabby look go, though, so it got a coat of gray paint.

Before: Sanded-down white with glass knob hardware

Partial After: Light-ish gray

I intend to change the hardware, but have hit a stumbling block - and this is where I need your help....

If I go with ring pulls, similar to these on the drawer:

What do I use for the cabinet doors, where the the same ring pulls won't fit?
Egg knobs in the same finish?

Round knobs?

What about a sleeker, cleaner, but also shinier situation? (Dare I go polished brass???)

Need your thoughts!

Also, I was thinking of keeping the "canvas" of the room very neutral in all grays - gray walls, gray changing table, and a gray and cream ikat on the glider (waiting to be reupholstered) and then letting colorful art take center stage, but it that TOO much gray?

Should I repaint the changing table black, or at least a very deep, charcoal gray, to add some more contrast? (Think that polished brass hardware = yum!) Yes, I'm noting the difference in hues between the fabric and paint...yet another dilemma...

I think in my haste, I'm not really thinking the design through, and need some guidance - so dear gurus of style.... Lead me!

*I'll let you chew on this for a day or so, then I'll follow up on the office/playroom situation soon!