Thanks for the comments.
I might just go for the additional 24" monitor.

I was under the impression that if I went with a larger monitor & if it was 2560x1080 i'd actually be able to tile more tables.

I also have no interest in ever playing any video games (nevermind 'decent ones'). Will it still be necessary to get a vid. card? (I read that the new i5 Haswell with HD4500 can run 3 monitors comfortably). < I really don't have much of a clue though (hence the thread).

If I did add a graphics/vid. card I guess I'd have to beef up the PSU as well to maybe 500-550W?

Would something like an EVGA GTX650 1GB be good for what I need?
or could I get by with GT 630 or a GT 620?