So after looking at it a few times, measuring the base tube (for those who don't know, this kit comes in two body tubes) I have decided to convert my Estes Leviathon into a 4 cluster 29mm rocket. I'm probably going to glass it to add weight, add a little nosecone weight, wrap it tip to tip (all glass 6oz) and assemble the 4 motor tubes and fins as a fin-can assembly to slide it into the rear tube. The end state is to have a stout, weighted cluster rocket to keep flights lower and be able to fly this beast without needing electronics onboard and still being stable.
First flight for simpicity sake will be on 4 Aerotech G77Rs.
If you all haven't built any yet - these are nice kits. Very nice to modify and you get 40% off with your daily coupon at Hobby Lobby ^.-.