I am going to build my first watercooling system. I want to watercool ma cpu first and afterwards my geforce,chipset etc. I desided to use the eheim 1250 waterpump. Do you believe it is the right decision or i must choose a smaller pump like the eheim 1048 or 1046? Also i plan to construct the waterblocks myself using copper blocks and metal epoxy instead of the stuff that plumbers use. You think metal epoxy is ok or sooner or later i will have leaks ? Thank you in advance!!!