look towards the new dark/blood angel codicies as a rough guide as to how the marine codex itself will look... (ie: 'combat squads' & no min/maxing!)
as for what chapter? well, the ravenguard are pretty troop heavy in that they have few tanks - just loads of tactical, devastator & assault marines, along with plenty of scouts!
or else, the imperial fists. again, they tend to field lots of bodies where possible, but favour more devastator squads...
crimson fists have tactical squads, but few other assets since the disatrous rynn's world incident. they also look quite good too with the deeper blue armour & dark red gauntlets!
if you like lots of dreads then look to the iron hands and their successor chapters! you can make a pretty stonking army with just tactical squads + 6 dreadnoughts!
hope this helps,
cheers!