Thanks for the suggestion, Peter.
Breww already has support for alpha acids, please see Adjusting the quantity of hops added to a beer batch for alpha acid percentage
We have an open feature request for the other options at Calculations on brew sheets with ingredients specifications. Would you be able to give that thread a vote to help move it up the priority list? Feel free to add any extra comments to that thread that you think will be useful when we get to the build.
Cheers 