I definitely don't think that the Nord FS pickups will be the right choice if you're looking to get a warmer/fatter/thicker tone. They're GREAT pickups - I've got a set in my fretted 6 and just love them - but the last thing I would describe them as is "warm/fat/thick", more like "P!$$ED OFF/edgy/aggressive".
LightGroove's suggestion is pretty good, IMO, the "stock" Roscoe Barts are going to be more of what you're looking for, I think.