if you use lr/ls the biowheel will be fine (and likely even unnecessary except for extra flow). i like having a skimmer but there will always be people going skimmerless...i'd suggest he use maybe 40 lbs ls (depending on the footprint of the tank, enough to give him a 4" dsb) 25-35 lbs lr, and a cheapo prizm skimmer. once thing you may also suggest to him, is if he's ever used medication in it, have him do a copper test. (is it an acrylic tank with no seams?) if it's glass copper could have leached into the silicone. obviously copper isn't a problem for a fowlr, but it's just good for him to know if there's copper in the system or not before he gets the urge to spend $50 (hypothetically speaking) on a clean up crew and has them wiped out from copper poisoning!
-leigh