If you know the site is small why do you do the pain and go react, router and fluxible etc. etc. ? The investment in this (huge) toolchain will be beneficial when you start making things more complicated... then you may hit a wall with normal jQuery/JS. But not every project needs a big React based toolchain. This is definitely a JS platform problem. I'm currently looking at Elm because it makes life easier in comparison... but there you have other gaps like not good jQuery plugin interaction.
