Bingo.
First thing i tell mates is to take the Coopers (and others) instructions that come with the kits and burn them.
Second thing is to never step foot in a brewcraft store.
And third is to read the stickies on this site about making beer including - a good yeast, ditching the enhancer blends, using fresh hops and most important... good temperature control. (well, i would normally chat about these things over a pint but its good to point them in the direction of sites like this as my opinion is only one of many)
Not everyone has time for all grain but that doesnt mean you cant make a good beer.
As for just using the ingredients, its a start but you can easily do better with minimal effort.