Low Poly Falcon Heavy Joined with Support Tower

I really liked the low poly Falcon Heavy model, and I liked the hollowed exhaust. I'd like to replicate the animated lighting I've seen here on thingiverse, but that's for later.

I didn't like the split in the middle of the model so I joined the two halves of the rocket. But then I had issues printing it even using a brim to hold the rocket down. I designed a support tower so that I could keep the model from wobbling and also wanted to keep the time per layer up so that the lift head function