HP 400 Watt Sodium $119.00 $($169) on EBAY

I ordered it from HTGSupply.com, My only regret is I am thinking I should have went 600, but we will see from the first grow. I Upgraded to the METAL HALIDE Converter bulb and got a free DIGITAL HEAVY duty timer.

It came with:

AGROMAX 400 Watt MH Converter buln 38K Lumens and a
GrowBright 400 Watt High Peformance Grow Lamp 55K Lumens
NEW S51 Ballast
NEW Bat Style Reflector
Heavy Duty Digital Timer

It cost me $35.00 to ship All in all $205.00

I hope it was worth it, this was my attempt to not use 400 Watts of Flourescent, but I think I will add those vertical for more output also use for Seedlings and cloning

Questions:

1. How many plants I am thinking 3-4?
2. Is that a good deal (Its too late I allready got it)?
3. Does supplementing the CFL's help any?
4. Has anyone else use this light!