1) Buy universal 9.5mm caddy (dont buy 12.7mm). Its aroung RM65. Then pull out the DVDRW. Take off the bezel/faceplate from the DVDRW to put on the caddy. The bezel procedure is optional. It just a case to make the caddy looks like DVDRW

2) I dont know. But from what i read from Lenovo Malaysia facebook, based on customer comment, their warranty not seems friendly.

3) U r buying this becoz of gaming right? Then dont bother with battery. Gaming sure sucks battery. But i'm telling u the battery is small. so dont expect too high

4) Prepare for especially the mousepad. So far my problem only with wifi always DC when idle. Another thins is, when I connect my Galaxy Note as usb, it will DC when idle after awhile. I think its due to windows 8 extreme power saving mode. I'll install windows 7 soon in hope the wifi/smartphone problem go away

5) Buy and gamble bout the warranty  U'll have more peace of mind