Lighting wanted to upgrade to MH.. advice needed

[TxOld Dude]

The place had a 400w HPS cool tube setup.. ballast.. set with new bulb.. ( ballast used.. 4 months old, used tube) for 200... I paid 205 for my setup... I didn't want the heat of the 400.. and it was hps only...i wanted the digital ballast. Dimmable, runs both hps and mh, and it has a switch to go from 150, 175, or 250... then it has a setting which says "Super lumens".. the lady at the hydro place said... just keep it on that setting and ill be just fine... Lol..

I picked up a new 400w MH/HPS combo dimmable with both bulbs and standard hood for $120 and free shipping. Hasn't arrived yet but looking forward to it.
Here's the units. One is Apollo brand and the other is iPower. For a few bucks more the Cool Tube versions are available as well.

Apollo

Standard: $120
http://www.amazon.com/gp/product/B004YXDHX6/ref=ox_sc_act_title_2?ie=UTF8&psc=1&smid=A2WRS4X4C0GMOQ

Cool Tube: $130
http://www.amazon.com/gp/product/B00547I5I8/ref=ox_sc_sfl_title_3?ie=UTF8&psc=1&smid=A2WRS4X4C0GMOQ

iPower

Standard: $120
http://www.amazon.com/gp/product/B005DO30MI/ref=ox_sc_sfl_title_2?ie=UTF8&psc=1&smid=AXC6VLRHTOFD2

Cool Tube: $138
http://www.amazon.com/iPower-GLSETX...l-Dimmable/dp/B005GYRB9S/ref=reg_hu-rd_dp_img

Fish