I'm at the point now where keeping all of my BTC in one wallet is too big of a security risk. I want to send some to a new wallet and just leave them there and rename the wallet.dat file when not updating the blockchain. I already use the -datadir command to keep the blockchain/wallet file in the same directory as the client. Are there any other issue I should be aware of when using multiple directories on the same drive? Planning on using less obvious names for these other directories and hoping that any stealer program will only take the active wallet file at most.

thanks

Edit: Windows 7, and I know not to run more than one version of the client at once.