How to pack a tour van?

Hello- Me and my band will be going on our first headline tour in the summer and i can’t seem to find any reliable sources of how we would be packing the van we are renting for this tour. The van is a Large Wheel base with 6 seats (3 front and 3 back) and will have more than enough space. Where i get confused is what order do we have our stuff in as we are taking full backline and lighting rig (details at the bottom of this post). As in is there a specific way that we have to put stuff in so it stays not only stable but lowers the risk of damage to any gear? What goes where ?(ie from top/down, side to side and front to back). And is there any general rules of thumb to follow?

Rough Tech Spec-

Full Kit plus 2x of Breakables and snares 6 Boxes of Merch 12u rack (flight case) 2 x 4x12 cabs 2x10 bass cab 2x Guitar in Hard case 1x Bass in Hard Case 1x Flight case for cables and other miscellaneous 1x flight case for moving head lights 1x hard case for par can lights