I have some experience with this. The only thing you need to be careful with is not to "run out of keys". The wallet file has 1000 pre-generated private keys with biblepay that are used for every new address you generate. Once you used all the keys, it automatically starts generating new keys for the new addresses.

So if you start mining on a lot of PCs and they suddenly run out keys and start generating new ones, the wallet.dat you kept may not contain these new keys!

The way to mitigate this could be to start with a wallet.dat with a bigger pool of pre-generated keys (can do that with biblepay-cli keypoolrefill x where x is the amount of pre-generated keys you want. You need to be careful as you wallet.dat file can become quite big!)