Weird dimensions and t5

I have a forty breeder that i partitioned off 6" for a sump. So for sake of argument let's call my tank 30x18x16 high. I have a mix of all corals. I am running a 6 bulb 24" Hamilton fixture. Mixture of ati and guiesmann bulbs (one of which is an actnic) I recently switched so I don't know long term how my coral will like the fixture. No shadows on the sides as I really only have 3" on each side without a bulb over it. Do you think this is too much light for a breeder? I am waiting to get my clubs par meter, but in the mean time I am hoping to add one more actinic bulb and pull another. So it would be one purple plus or coral plus not decided yet, 2 actinic, and 3 blue plus. My only concern Is with 2 actinic and a 24" light over 30" of tank would I have enough light for my sps which are only on the tops of the tank, and my rock nems which are on the bottom. I can tell its currently too much light for my shrooms and chalice's. I should have a par meter within the next two weeks I just don't want to waste money on a bulb if I will have to take it out right after . thanks for any input!

 

And the option would be a guiesmann power chrome actinic or uvl super actinic which according to grims par list puts out the most par for an actinic bulb

 

I think that's a good amount of light. I ordered a purple plus and love it! I think you would like the looks with your combination