I may not make a loss, I might just break even, in which case...

I may not make a loss, I might just break even, in which case tax has been paid unnecessarily.
Also, in the event that all goes well, it may not be advisable to sell and pay more tax but wiser to hang on and collect dividends on which tax will be paid in small amounts each year out of the dividends (which would have franking credits) and would not commence for some years..
On the question of faith, blind faith is not a sound reason to invest. You should realise that there is always the possibility of a downside and calculate accordingly.