Amber probably is fine. Your monitor probably can't run below at 15khz. Try adjusting the fine tuner in back of the 3000 to get rid of the occasional jitters.
If your going to expand the box pick up a Buster 11, they are fairly easy to find.
If you don't have 3.1 I would recommend you get that as well...
As you mentioned above, the market for the 3000 cards are up there, my guess is a real good 3k accelerator will always be high. Save your pennies for a Warp Engine 3040 or a Cyberstorm MKIII, they work the best in the desktop.
As far as NIC's go, the best zorro nics are the X-Surf and the Ariadne (not the II version). From my test years ago the Ariadne was the fastest nic in Amiga Zorro land. The Xsurf is a nice card also with expansion capabilities.
Video - the best zorro based video cards are the Picasso IV, Retina Z3, and the Cybervision 64. The slower cards are to slow at higher resolutions.
The best addition will be a video card and a nic. The video will greatly speed up workbench and using the amiga on a lan at decent speeds is convenient.
From my experience, much better to save up for the good stuff, it makes the 3k really nice to use daily...
Thats my 10,000,000,000 Cents (2 cents adjusted for inflation).
