question about partition

a newbee question, I would like to install suse and windows2k on my laptop with a 40G harddisk. I want to give suse 8G~10G, 4G to win2k. question is how to make the partition? I plan to give 15G for C: where I install win2k first and then suse. 10G for D: win2k software. 5G for E: win2k documents. is this alright? is 10G enough for suse?