I suggest you buy a classic Amiga, such as an A500, A2000, A500+, A3000, A600, A1200, or A4000 for a lot less money from eBay or wherever you can find one, such as being thrown out, or from an ewaste place, or a thrift store.
The A2000, A3000, and A4000 have expansion slots for plug in cards, but the other Amigas only have trap door expansion slots, although they also seem to be of the same Zorro type. These could be extended with a classic Bodega Bay expanion unit, or a classic or modern Checkmate Digital case. I don't think that the X5000 or the A1222+ with OS4 are all that much like the Amiga at all.