Go into the Kits&Extracts forum page and have a look at ianh's kits and extract spreadsheet. It'll help you with adding in some of the extracts and how that will effect your final ABV. It's pretty easy to use.
https://aussiehomebrewer.com/threads/kit-and-extract-beer-spreadsheet.29655/
I've got a pretty simple lager fermenting at the moment with S189, what are peoples thoughts on lagering using this yeast? It's been fermenting at 18deg.