I can do it-it's really easy on the asm plastic, it's not brittle like the euroreef acylic.
I have the hole saw, I also have a 1/8" hole tap if you want to put in a drain on the cup (you will need one). The gate valve is also needed, makes tuning much easier.
The recirc mod helps if you want to run wetter skimmate. I used a tee off my return pump to feed the skimmer FYI.
If you bring it down, I'll drill it for you. I only ask that if it cracks you don't hold me liable =)