I just replaced my head gasket and left the cams in place when I removed the head. That’s the way I delivered it to the machine shop and the cams were reinstalled by the shop after they recut the valve seats and set the proper clearances. I had to set the cams to TDC on #1 piston myself.
Remember that the valves themselves are interference, so don’t just start spinning either cam to get
them to the index mark without making sure the intake and exhaust valves don’t collide. You can do it by rotating each cam until there’s about to be interference then move the other cam. A bit of a ballet.
I didn’t worry about bending the valves while I stored it. I simply set the head (valves down) on two wooden blocks, one in the front and one in the back, ensuring that they were clear of the valves.
If you make sure the engine is set to TDC for the #1 piston and the head is likewise set then just drop it on and bolt away. No worries about interference.
A final word, I didn’t worry about rotating the engine while the head was off. That way I could give each piston a good cleaning. I even removed the distributor. Just make sure you line everything up and you’re good to go.