Fixed that for you.
Now to answer your questions:
Yes. You can switch to a lightweight wallet (such as MultiBit, Electrum, or blockchain.info/wallet) where you don't need to wait for the entire wallet to sync. If you want your current bitcoins to show up in that other wallet, you will need to export from Bitcoin Core the private key associated with the address. Then you will need to import that private key into your new wallet.
The process for importing the private key depends on the wallet that you choose. If you can't figure out how to import the private key after you've chosen a new wallet, then come back and let us know which wallet you've chosen. Then someone should be able to give you useful instructions.
That depends on the reason that your sync is slow. If you have insufficient disk access speeds or insufficient RAM, then the only way to improve the sync speed is to upgrade your hardware. If you have a slow broadband internet connection, then there is a copy of the blockchain that you can download via torrent. If you install that copy of the blockchain on your computer, then you can significantly reduce the sync time by eliminating the need to download most of the blockchain during the sync process.