I am setting up a Bitcoin shop and I have a couple of questions as follows -

• When using the bitcoind daemon, if I modify/delete the bitcoin.conf file, are there are repercussions doing this?
• More specifically, if I use 'keypool=1000', and then in a few months time decide I need a larger number of addresses, can I simply change this to 100000 and restart the daemon? Will the previous wallets/addresses be removed?

Thanks