I pulled the push rods out while replacing the cams. Also, don't forget to remove the exhaust pushrod lifter.
A couple of things to note: make sure to check the new cams spin freely (without compression or push rods) and there are no tight spots as you turn the motor. If so, you may need to adjust the cam lash. If you do adjust those eccentric spindles, do your research! Make those too tight and you'll have problems shortly.
As noted by BWs instructions, make sure there is no interference.
When replacing the timing cover, ease it on and gently spin motor via kick start and apply pressure to the cover to engage the oil pump gears. It'll make sense once you see it and try to replace the cover.
The longest part of this for me was removing the old gasket material. You'll need a new gasket but no special tools needed.