Soilmaster you'd get from
http://www.lesco.com and Turface Pro you'd need to find a distributor here:
http://www.turface.com/corporate/wheretobuy.cfm?lp=gb. Both are probably about the same price and possibly color, so just see which one you can get easier.
I can't remember from the other journal, but are you going to inject co2? If you want the Dwarf Baby Tears (HC) and some of the other plants in the package to be truly healthy, you'll want some co2 for them.