Hi Romans81,
I believe you may misunderstand the process if your intention is to follow an EEA route to UK.
Under EU regulations Fiancee is not normally considered as a family member.
Please do take some time to review this link here review this link here for the Irish Government Policy on Non-EEA Family Reunification.
The reason for your questions is due to you ticking the boxes for a short term visit visa.
Hope the link will help you?
Are you resident in Ireland ?
I take it you are UK citizen with no Irish Passport ? and have employment in Ireland ?