Here's the explanation of how to know if you have room. Your total inches is 100. Assuming you have cabinet on each side, subtract 25.5 for each side (the depth of your countertops) and now you have 49" left. You need 33-48" on EACH side of the island. If you used a 12" deep cabinet for your island instead of the normal 24" depth, take the 49" and subtract 12 (but you will have some counter overhang) and you have 37" left. Divide 37 by 2 and this gives you only 18.5" of space on each side of your island - not nearly enough space to move around or to open doors/drawers/appliances.

there is no perfect dimensions for an island. Try to organce space subdividing into smaller cabinets of 60x60 cms which is the max space for a structural division and works for seating area as well

normally the breakfast counter height varies from 36" to 42" if you want it to be perfect height select the stools for the counter first then check the height of the stool and add 12" to 15' in the height. distance between the stool seat and table top should be 12" to 15" max...

Are you referring to Nano white crystallised glass also known as nano white marble as it replicates the look/shine of good quality white marble. Thanks, Nitin CORNERSTONE DESIGNS Bangalore