Your plan sounded perfect except for the complete infeasibility of it. Countries don't let felons from other countries immigrate.
Lets say a felon immigrates to germany. their policy is they won't ask. but if they find out you were a felon in the US, at any point in your life, they will immediately deport you. and your life in germany however much you built, is forfeit. yay! at any point in time.
that is not an acceptable risk
You end up on a no fly list or become a convicted felon and that’s it, your life of travel is snuffed out.
I really feel for the OP.
This likely depends on the felony of course. A DUI in which no harm/damage occurred is probably the lesser of the felonies.