Designing Kitchens and Bathrooms - How to Shortening kitchen island?

My kitchen island is a little too long, I'm thinking of shortening it. It is covered with tiles on top, below are cabinets.

I was thinking of using a circular with a masonary blade, cutting it barely about 1 inch thru the countertop, then remove it, then remove bottom cabinet.

Please let me know if this is the right way to do. I'm brandnew, never cut a counter before. Do I need to have water or coolant to support cutting?

Whoa, pull the reins in a little! You just don't go cutting things, especially tile countertops. Is it the entire island that is too long, or just the countertop? How much overhang do you have on each end of the cabinet? Are you wanting to remove one of the cabinets as well? What will you do with the ragged end of the existing cabinet? Why don't you post a couple of pictures of the island on a site such as photobucket.com and copy/paste the IMG code to your reply post. That way we can see what you see.

Here's the pix.

http://i234.photobucket.com/albums/ee229/wadahail/DSC00613.jpg
I wanna cut where the BLACK line is, get rid of the bottom part, it's too long and taking up space.

http://i234.photobucket.com/albums/ee229/wadahail/DSC00614.jpg
Here's the other view.

I will probably use a piece of real wood to cover the side of the cabinet after removal. Will make it look like just the way it is, except shorter.

advice please.

The cabinet removal will not present a problem, except for the hole in the floor where the electrical cable emerges. It will have to be relocated to the side of the remaining cabinet. The cabinet pieces will unscrew from each other. I would either cut or break away an overlay portion of the countertop, stopping at one of the tile seams, plus 2". This will allow you to remove the 2" tile pieces and replace them with the bull nose drip edges. You can cut it, but what a mess. I would opt to remove the tiles in the area of the cut and just cut the cbu and wood underneath (still a mess). Be sure to leave enough overhang to match the other side.

so you're saying instead of direct sawing thru, remove the tiles first, then cut?

I was thinking of cutting exactly where it needs to be cut, have a clean cut, and then remove the tiles by the seams and patch up the edge with the same cornering tiles.

You can do it that way, but be sure to cut exactly, leaving the distance covered by one of the bull nose tiles, so you can replace them exactly as they were. Good measurements will be absolute. Post some pix when you either finish or need more info. Good luck.