@Samuar:
Seems a lot of money for not a lot of components. What are your experiences and are they worth it? Does it make a significant difference to the Amiga products?
Yes it does. You'll have a completely different (i.e. better) setup after upgrading.
However, you should carefully examine if you still need the custom chips. If your main desire is to have a machine that runs AmigaOS faster, is more comfortable to use etc., you may aswell buy an AmigaOne or a Pegasos. These will not run software that needs the custom chips (i.e. games), but they are way more powerful than any classic Amiga will ever be.
Personally, I'd just keep a slightly expanded A1200 (internal HD, some FastRAM) for Retro-Gaming and buy an AmigaOne/Pegasos instead.