That sounds good. well do i need to add any thing. why wouldn't you do it with a kit.
Over here, "they" don't sell mead kits - lets face it, a mead kit ? Honey, water, yeast, nutrients and acid.... This isn't to be critical but as "traditional" mead is quite basic, there's really little point in actually producing a kit, other than to be sold as an "impulse" product.
Not to worry, it's getting you to give it a try.......
Add anything ? probably not. If the instructions are well written, then they'll have stuff like approximate gravity/brix information etc. If you haven't already started the kit, then if it were me, I'd be making the must up, with apple juice first, then adding some of the honey (maybe half) and checking the gravity - from choice I'd be aiming at about the 1090 to 1100 level, much more than that, and you could (depending on what yeast is supplied, though you did say it was for dry mead) experience problems. Then with whatever honey is left over, I'd mix it with a little warm water and then as the ferment progresses, add it in.
Of course, being a kit doesn't mean that they haven't supplied "quality" varietal honey, though I'd suspect not.
As for why not doing something like this with a kit ? Well if you're not an adventurous type of brewer, then you might just want to see what the base kit comes out like to achieve the "original" intended flavour.
Either way, good luck with it.
regards
fatbloke