Steve the standard pump to a swirl pot will be fine, just make sure the return is at least as big as the supply line. The 044 may be too big too, i would go for a Sytec 020/whatever (basically walbro - dont beleive all the hype - most rally teams use them in v harsh conditions, just make sure you use a pre-high pressure pump filter.)
The lady on the end of the phone at this website is very helpful and they carry everything you need in stock.
http://www.fuelpumpsonline.co.uk/wal...rice-249-p.asp
I would plumb in like this: OE tank pump and fuel filter to a swirl pot, return line to tank. swirl pot to HP filter, HP pump to fuel rail, FPR, to swirl pot.
Hope you get sorted m8. 1 ltr swirl pot should be fine too