The area I'm going to cover is 3mx2m so I'm thinking of having 6 sets of 32 strips which is 192 strips in total. This is going to be very bright for a small area though I am not sure if there is an alternative or if I can just send less current to the LEDs.
6144 LEDs is pretty heavy duty. Do you need 1 every 1.x inches? For a 6.5ft x 9.75ft wall - every 2 inches brings your count down to roughly 2281, every 3 inches (a standard for a large matrix) would be only 1014 leds. These numbers are much easier to manage from a power, memory and update speed perspective than 6144.
If your going to invest in this many LEDs - go with the WS2801 solution on the LPD ones - they are just much better from an end result and ease of programming perspective.
You need some good 5v DC power supplies to run this and make sure if your AC is are 220 / 240 you specify. To run full power - white you need 1800 watts to run 6144 LEDs but only 685 to run 2281 and 304 to run 1014.
Yes this will be bright but you can decrease the brightness as you may have seen in my video. This is one by the chip, not the input current. This is great because it allows you to set the entire scene to say 20% power and then have a full or more power "icon" run around in there and the results are pretty wicked and even shows up cool in video form (rare for LED lights - usually videos don't do justice to the lights).
I plan to control the display from live data so won't have any physical controllers connected initially.
Not sure I follow this. When you say live data - do you mean computed on the fly at the controller level or live data from a computer steam or other?
Are you a programmer and if so - PC and/or Micro-controllers?