>>3102647Beware of squeaky shutters, it's a known issue but not a deal breaker. Get the seals done on it if they aren't done. It takes a weird 6v battery, PX625 I believe, some camera stores carry it. Batteries and Bulbs will have it.
If you are going to go all-in on an orphan system like FD mount, do it like a man and get pic related.
These lenses this guy got
>>3102978 are breddy gud. The newer variants are optically identical to the current AF offerings brand-new from Canon.
The AE1 is not all metal, it is painted plastic on a metal frame. As long as you don't drop it you'll be fine.