Verb conjugation of "former" in French

It looks like we need to invite Erika again to my home, once the cake is ready. Of course, this should be done before Sunday to stay in the chocolate cake race. We should buy cream too.
The idea is to use the sourcing to get as much information as possible about learning abilities and disabilities in average. This way we can determine and forecast best practices for language learners based on some parameters.
If I'll have the time, I will visit sometime, perhaps you can write me an email in English. I will be correcting it and hope not to discover any errors there. In which city do you live?