Well i ended up going for my res of choice in the end.......the Bay-Res which will keep the top of the case looking standard and i'll actually be able to use the usb's etc in the flip up lid which will make a change.
Anyway, got it filled with deionised water and added a little UV dark blue dye to match the colour of the case which look nice
No matter how many times i do this its always a relief when nothing leaks
Its been running now for a couple of hours and all air is out........flow rate is great
Time to start putting things back together
Oh and the DVD writer will be swapped out for an aluminium front one