Sounds like your on the right track. As for the coolant,i have had head gaskets leak and still run ok.
Start it with the rad cap off,and see how much the coolant is moving when you rev it. If its really bad,like spraying out,your head gasket is blown. You should be able to see it flow pretty good with the cap off though.
Remember that it will not stay completely full,they will stay just below the fill neck,maybe 1/4 or more below.
If i fill mine all the way,it will spit out coolant till its at the right level.
Give it a reall good ride and check around the head as well on the outside,make sure it isnt seeping out.