Welcome FRIEND! 5 YEARS! I certainly do admire your fortitude.
I know you heard it all before, but try not to ponder on what he may or may not do, because we're just no very good at predicting what's gonna happen.
Approach him on Tuesday with an open mind ... a clean slate if you will. Don't worry about those dealbreaker just yet. Hear the man out. It might even benefit you to make a promise to yourself beforehand as to not say too much at all during this talk. Hear what he has to say ... validate where appropriate and if he asks as to what you think, stay with the theme that he has given you something to ponder on and that you will need some time to sort through it all.
You've built of up five years of anticipation about this juncture ... you don't to react or say something on impulse. If he is truly looking to come back, then there will be plenty of time later to workout those dealbreakers ... all in due time.
Piecing is just that ... taking on piece at a time to putting it in the right place.
For now just listen to what he has on his mind and let that lead you to what you feel should come next. If you're not sure ... there's a some good folks here that will help you sort thru it.