I have a 400mhz pismo with 512MB RAM also and is running 10.4.11. It is quite quick all things considered. For net surfing I had to dump safari as it was too slow compared to firefox.
If you plan to spend money on it, instead of a battery go for a wireless card. The only batteries you can get are the crap Chinese brands of which I have one here. It was new but refuses to charge so it is just a paper weight and the original battery charges sometimes.
Even better is if you can avoid spending money. I'm sure you can at least get 256MB RAM from both parts units and install 10.3. That would be the most optimal and you can save your money for a newer unit like a G4 iBook...just a thought.
If you plan to spend money on it, instead of a battery go for a wireless card. The only batteries you can get are the crap Chinese brands of which I have one here. It was new but refuses to charge so it is just a paper weight and the original battery charges sometimes.
Even better is if you can avoid spending money. I'm sure you can at least get 256MB RAM from both parts units and install 10.3. That would be the most optimal and you can save your money for a newer unit like a G4 iBook...just a thought.