Tax on retirees, page-21

I am wanting a recommendation to track my share trading. 850 trades to date this fiscal year..Need to be able to identify stock being sold as in last in first out etc. Have myob, excel and ms money. The latter is an easy use program but not an accountants choice.
2017/18 has been a "Good Year" for me and I would very much like to know the accounts I return to the ato are in my favour if at all possible.
All comments and assistance appreciated.
Handyguy
sorry if this not the correct thread..learner! on HC