The whole idea of removing the filter in the camera is to make it more red sensitive for astropiccies, but you'll need a clip on IR/UV filter for normal use during the day and such. Goto
Bintel and grab a 2" Astronomik UHC filter for astropiccies. They're about $250 and they'll be suitable for what you want. You'll also have to buy an Astronomik OWB CCD (EOS Clip) Type 2 to be able to use your camera during the day.