I don't know that I'd be thrilled going into an exam with that as the average score... BUT, the caveat is this - use the results from the mocks to tell you what you need to concentrate on with your last minute studying. You do seem to have a high enough score to pass, if they're on the level of the test - just make sure to work over the weak spots!
Theodore Jonathan Casser
SCJP/SCSNI/SCBCD/SCWCD/SCDJWS/SCMAD/SCEA/MCTS/MCPD... and so many more letters than you can shake a stick at!