I'd be a bit weary of the woofer. I've never heard anything about Cambridge loudspeakers. They could be good, they could be awful. Again, not knowing the quality of the woofer I think that's a bit pricey for what you're getting. If you have some woodworking skills, it'd be more cost effective to build your own enclosures.
<b>However</b>, if the woofer is of reasonable quality and you're not very experienced with DIY loudspeakers, I think that's a good way to go. Everything is included, so it's hard to go wrong. A kit like that pretty much guarantees good sound.
thanks for the reply. i could not find cambridge on the internet so i thought id ask. i am new to loudspeaker buliding but cuold esaly build my own cabinets. i did plan to purchase this kit without the cabinets. if any one has any sugestions of a good woofer tweeter and xo of around the same size (around 5" woofer) that would still be fairly cheap it would be very helpfull