I want to mount the LEDs and IR LEDs in an atypical pattern off the board for the interactive led board (the square black one, 80 LEDs). I've developed a random position generator and random cable length generator to get an organic hanging firefly effect in a hallway. The max length from board to the LEDs in each node is 7.2 ft. I'd like to use the smallest possible gauge two strand speaker wire, hopefully 24 gauge. Will this work for that distance? Thanks!

Yes, that will all work fine. 24 gauge is an excellent choice.

Do you still have the bulk LEDs that are matched in your shop? I couldn't find them...

The blue and (cool) white LEDs at our shop, in any size, can be sourced in a bin-matched set. If the bin-matched set is essential, please use the contact form there to request it.

Looking at pricing all the components separately, it gets pricey. I see that the interactive LED panels are custom packaged... Would it be possible to get a couple of the kits minus the circuit board since I plan to make custom boards for each node? What would this cost if it is possible? Thanks.

You might want to contact our store directly about that. The contact form is here:
http://evilmadscience.com/contact

You are always so quick to answer and so helpful. Plus all your stuff is just freaking awesome! Thanks for sharing it with the rest of us!