If you are rebuilding your motor and keep the correct clearances, then you won't need a Hi-vol oil pump...IMO, the Hi-vol oil pumps are a band-aid to get the oil pressure up on a hi-mileage motor where the clearances have worn to the point of having almost no oil pressure at idle...
As Intercooler had said, I would go with the stock front cover with a booster plate...And as long as you don't have over .002 clearances on the rods and mains, you're oil pressure will be fine with the stock oil pump...
Also, I believe that TA Performance also sell the booster plates...I think they are also slightly different than the ones you can get at AutoZone, Advanced Auto, O'Reilly's, etc...And you can also get the std oil pump kits there, as well...Make sure you set up the oil pump with no more than .002 gear end play as well...Any tighter than .001 gear end play and you run the risk of the pump gears locking up...
Hope this helps...