Rafters. End plate or blocking, and cyclone rods??

Going to build a shed soon... It'll have a skillion roof at 6 degrees, constructed of rafters. I can either run an end place at each end or block the gaps... End cap is stronger over all as it ties everything together but each rafter has less contact to the top plate unless I block...

What's your choice.

Also. I might be two stories so would you run the cyclone rods continuous from concrete pad to rafters or concrete pad to first floor joists and then a second run to the rafters...

Just to note. The shed will be built to 1A (dwelling) standards not 10A (shed).

A bit of same same, the end plates will be seated on the top plates and the rafters secured to them so the load transfer is the same as with blocking
With your tie down rods you can use barrel nuts on top of the plate to join / extend the rod up to the final top plate or provide new rods adjacent to the rod below it on the same plate. Either one will transfer the load down to the slab