I liked HC at first, but now I've start training non-HC, because that generally makes you a better player, than HC would.
Also, non-HC more 'realistic' for 1on1s, because it's doesn't depend on who shoots first, but who's got the best aim, and the best selection of weapons.
By the way, I like stealth kits too. Kantham, try it!
M4 carbine + silencer
Deagle (Desert Eagle)
Perk 1: Claymores/bandolier
Perk 2: UAV Jammer
Perk 3: Dead Silence
Generally on HC servers, dead silence is not THAT important, since there is no minimap. However, silencer and UAV jammer are essencial. Perk 1 doesn't really matter that much, though I prefer the two aforementioned.
When I first tested this kit, I got kicked from a server for spawnraping, even though I was advancing towards an HQ. Going behind the lines and kicking everybody's ass, now THAT'S fun.