Personally, I'd sell what you have (there's plenty of dead/sick A1000s looking for donor parts), and put the money towards a working A500 (if you still want an OCS Amiga).
The A1000 is a lovely museum piece (I have one also), but for actual use, an A500 is much more accessible and expandable.
Yeah, I've thought about it. A replica 500 is doable (new cases, FPGA that fits inside etc) and I've realized it would be mostly about playing old games and was just looking at the A1500 Mini case this afternoon. But... I will most likely just put together a Mister system at some point.
The A1000 is a lovely museum piece (I have one also), but for actual use, an A500 is much more accessible and expandable.