Got a TekMagic 060, 128 MB RAM, SCSI -2 Controller on board. But its price is >$500.
as far as:
network card price range $130-150
picasso 2 graphics card $100-160
I would say this is what you need as the BASIC setup if you gonna enjoy your amiga. Deneb won't speed up your cpu or anything like this. You'd be better off buying a faster CPU/ Accelerator board. :-)
And by faster perhaps 68060 or 68040 at least.