The Rigid strips are only 1m each vs. 4m for the flex strips. So cost wise is about the same, except they nail you for shipping a little more on the rigid strips. If you get a quote from Ray on combined shipping, its usually a little lower than otherwise. Looks like bill cut his flex strips ... so you could do this with rigid also (easier?) ... and could also do with SS nodes also and just mount into something easy like Coro or other materials.
In order to sequence the matrix, you will need software like either LSP 2.0 or LOR S3 with superstar add-on, since superstar does the matrix stuff.
Honestly, when you add up the costs for a matrix, a TV from craigslist starts looking pretty attractive.