solid start, but i'd go a little deeper and do a compression test and maybe a leak down depending on the results of the that.
for me, i want to know what's cookin' when i open it up. that way if i see something different or unexpected i can adjust my approach.
also, nothing sucks worse than doing a head gasket only to find out that you've got a cracked head... which you find out after getting it all back together.