Those seedlings may not need all that light right now. In fact the two led units alone will work for those during veg or at least till they are bigger. Doing that will save you some electric costs, Thats one of the beauty's of led!! You will be happy with your light set up and you can grow some nice sized buds with em. When they are getting larger and you up pot that's when id add the Agro unit and use for the rest of grow. Do you have more space?
Take a look at my sig for a similar grow with a 400w hps and two led units as satellites.
If this is going to be your grow thread I'm subbed.