I would wait till week 3 at least. The cotyledon's (the first leaves), will supply everything the seedling needs except water and light.
You are also a noob and will probably make the noob mistake of over nuting. A 3 week old seedling stands a better chance than a 2 week old.
Snag some Jack's Classic or Dyna-Gro. Both are good quality, simple to use and cheap. HD may have Jack's, but even ordering online you can get enough Grow and Bloom for more than 1 grow for less than $25 or so of either brand.
Keep it simple for the first few grows.
Wet