I guess it depends on what games you will be playing to decide on which GPUs to purchase. Will you be doing CAD type work? Video editing?
I can't see myself ever paying over $1K for a monitor unless it is with the company credit card. The LG 34UM95-P is a heck of a monitor with all the bells and whistles you could ask for @ 1440 res. But that price tag hurts my anus!
Personally I would go with 2 or 3 of the LG 34UM65 in Eyefinity or Surround. 2 of those would be the cost of 1 of the others.