Howdy,
Since you are on the other side of the Mason Dixon, go for a company out your way. I believe Champion is out your way (I could be wrong).
Anyway, go with 400w Mh instead of 175w. On a tank that deep (assuming it's 24" deep like mine), you will want the extra brightness of the 400w.
Going with 400w might be more expensive now, but it is worth it. I have never heard anyone on this board complain that their lighting was too bright or too strong. Spend the extra moola now, not later on when you want to upgrade.
Good luck,
Scott.