Upload & Sell: Off
I have the same machine:
Processor 2.7 GHz Intel Core i7
Memory 16 GB 1600 MHz DDR3
Graphics Intel HD Graphics 4000 512 MB
It works very, very well (no delay) processing D300 files in LR, D800 files work fine as well but there is the occasional delay - does not bother me, but if you are a full time wedding pro it will. Again, this is only for large D800 files, I mention this because despite your name, you have listed D800E in you profile, granted 'tentatively' :-)
I am also considering either 2 of the monitors you list - 15" is too small for editing
On another note, besides editing, this is the best laptop I have ever owned.