Thanks for everyones advice,
I am going to stick with RG6 and just put more care into the connectors. I think I am going to use these cameras from Ebay.
http://www.ebay.ca/itm/271529766738?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
I have this card (below) left over from my last install which seemed to work fine. As soon as I get the system working and recording I would like to upgrade this card as it is only 100 FPS
http://www.dvr-card.com/sdp/441772/4/pd-2459157/5655365-1232552/DVR_Card_GV-800_V3_01.html