Lighting is an often debated issue. This isn't the be all end all of lights, but a buddy recently passed along this link. The light works well and is fairly inexpensive compared to similar offerings out there.
http://www.geomangear.com/index.php?...roducts_id=180
I don't buy into all the debate about rear blinkies. I just agree you should have 1 or 2. I bought a $10 recently after I lost my old one. Since my old one was 10+ years old, the new one is shockingly brighter! If you're worried about it being visible enough, get 2! LOL It will still end up cheaper or about the same as one of the "in" lights. Just make sure it will attach to your bike securely so you don't lose it

Can't help with the helmet. Mine is 12 years old. hehe

As far as clothes go, to be seen, where something reflective. Most folks wear a safety vest. I just have an obnoxiously bright yellow jersey I wear

Edit: I just realized the light I linked to is a MagicShine LOL. oh well, it's a good one