Yes it could be painted. It comes already painted white with a very nice finish. If you really need to paint it, you might want to paint the unassembled pieces that will show, then assemble the cabinet. We were looking for a white cabinet, so this was not an issue for our installation.
No, it requires no painting.
The width of the stile on this shaker cabinet is 3 inches wide.
Those finishing accessories aren't available at this time.
This drawer comes in true white color.
Yes, this comes both assembled or unassembled depending on your preference. Model #'s are 561407 or 613208. Not that due to the larger size, the unit comes with 2 drawers on top.