DIY projects

Hello everyone I am working on a new sump for my 75 gallon tank. Here is what I have come up with. My question is this do I have a the baffles the correct? I have reef octopus skimmer 6 rated for a 150 gallons and should sit in 6-8 inches of water. The two baffles in question are labeled
(red arrows in the picture) do they both need to be 8 inches high or are they good the way there are? let me know if anyone spots any other issues with this set up as I don't what to have the glass shop cut ...

So I have been thinking about doing this for a few weeks and finally getting around to it after trying to get the nitrates down though regular water changes etc. After thinking about it I decided to use the media tray area in my sump made it real easy. Where the red arrow is pointed.

So after taken the media tray out I put in some egg crate in its place, was added to support the screen which went on top of the egg crate like so. I purchased the screen at ...