Auto-Crafter ‘shut off’ when full. 1st draft, redesigns are super welcomed

1. Items fed into Hopper
2. Hopper > Crafter
3. Crafter has 8 spots filled > Comparitor outputs stronger signal
4. Observer(s) see redstone wire change
5. Observer powers crafters> item ejects into pot
6. When ‘pot’ contents start to fill, signal is sent/noticed by observer, and Copper Bulb is powered, locking top hopper from releasing any items.

I’m a super novice, if there are other designs out there, please let me know! Haven’t found any yet!