If I really wanted to do this the right thing, I would learn how to use Armory as a watch only wallet. This is the best suited wallet to do that, that I know of.
Download Electrum and you can import your MPK or addresses.
Well call me paranoid if you want, but I don't see that as a safe practice. In general, the idea of seeds, or anything that can generate more addresses through a single hash, is a total mistake. Exposing your private keys to move funds from wallet to wallet is a mistake as well, just transact your coins from wallet A to wallet B. It may be too extreme of a view but that's me.