I used Valvoline 10w-30 on mine.  It also had a lot of assembly lube in it.

Ran it 20 minutes to burnish in the new can and new rockers (I did not see new rocker arms listed in your parts list).  Change oil and filter, check valves

100 miles, did it again

500 miles, did it again

1000 miles, did it again.

Now I do it every 2500 to 3000.

this is just me.