That is great advice. If your goal is to build a solid network check out this post.
Building out from the center is your best bet. It might not be the "funniest" route as some device might just be repeaters that "do nothing" for the humans. However it will give you a great mesh to work from.
Personally I'm trying to swap outlet (in wall) with GE/Jasoc Z-wave and Zigbee outlets. Not super cheep, but WAF is higher than socket outlets. I am trying to alternate 1 zwave 1 zigbee all around my house. Once they are all replaced I should have a rock solid mesh for both system, even as few of the outlets will actually be used for automation (the tree 6 weeks a year, maybe a lamp).
