We're going to work on offering a quad setup in the future. Right now they will be introduced with the single tips. I weighed it quickly a few weeks back but can't find it in my notes. I remember this being about 35-40lbs lighter than the stock system.
It's not yet available for sale, we're still waiting to fit the production version before this is ready to go. Pricing should be in the $7xx range once we calculate total cost involved in the project.