I have one suggestion. Lay down on your bed or couch, close your eyes until you sleep. Then in your dreams you can have all your wishes come to true. Downsize of it though, you will have to wake up. But ONLY there will you have your Amiga NG in an ARM platform.
You could do that as a solution OOOOoorrr skip OS 4.1 and use either AROS/MorphOS.
+1
That would be my advice too

If you want ARM (and use something on Raspberry) you have the option to use AROS (2 devs are right now working on a native version with full hardware seupport). Or use MorphOS on one of the many cheap options.