Are you wrong? Yes and No. You just bought WAY low a year ago. 55" TV is 1920x1080 res in all likelyhood (it isnt more) so in no way would you need 2 of the dual GPU cards. Also, you arent hooking it up to the PSU so why would a monitor require a larger PSU (thats how it was written, sorry if I am mistaking).
What GPU do you have/buying to run on that monitor? Honestly man, a PSU with 60A-70A on the 12v rail will be just fine for SLI/Crossfire single GPU cards. You do not need now, or in a few years a 1-1.2kw PSU to run 2 single GPU graphics cards. Nor do you support the resolution needed to justify 2 dual gpu graphics cards. Dont believe the hype. Just take note you made a boo boo on your PSU purchase last year and members here (like myself) will steer you in the right direction.
A name brand PSU with 40A on its 12v rails will run ANY single GPU card and overclocked quad core without breaking a sweat.
Looking at your memory thread, money is obviously an issue. So save your self some money and get say Corsair 850HX and run any 2 single GPU cards and any processor on it.