Goal account renewpartkey: cannot construct transaction: txn validity period is greater than protocol max txn lifetime 1000

Indeed, this looks like a bug.
I’ve made a report:

Thanks for the feedback!

Participate in Consensus from Ledger Nano S/X using Raspberry Pi

Welcome to Algorand!
I would say anything below 1M is good for Raspberry Pi.
There are almost no additional requirements with regards to processing power when using higher stake. The statement was in regards to the fact that for higher stake accounts, failure of the node might have more consequences.