my first guitar was a rr3 and from being a repair tech and experience with friends setups i can say a package is the worst path to walk when getting equip, some ****ty guitars can discourage would be players into quiting, due to mass production and ****ty soddering and horrible pickups and frightening action the last thing a six year old needs is a crap guitar with yngwie style action and screwed up intonation with a buzzing neck and an amp that can get only one sound and a guitar cable that crackles with broken wire in a weeks use. not to mention the uncomfortable straps and crappy inaccurate tuners and stupid lesson vids that come with them.guitar packs were designed to sell quickly to anyone and thats what most stores gear towards, beginners and the like.i would suggest a tradition guitar qaulity at a cheap price and a v amp and some low model crate or you can just buy an adapter and headphones if you dont want your kids playing "noise" and bypass the amp until they show some improvement and get them some lessons.
my mistake was getting a floyd rose on my first guitar, man did i learn.but i never looked back it just helped me learn how to be self sufficient..........