Equipment: Your best range armor. Sirenic > Pernix > Arma > Karils > Royal Dragonhide Weapons: Ascension > Death Lotus Darts > Chaotic Cbows > Zaryte/Royal Cbow > Hand Cannon > Crystal Bow
They're banned here, for some really odd reason. I don't think you can have them imported either, because it will get confiscated at customs (and you might have to pay a hefty fine as well). I think the only way to get one is to buy one if you just so happen to travel abroad. Are the taxes on tobacco high where you live? That might be a reason.
Personally, I would stall adrenaline between kills so that you can start off with thresholds. You might also consider using a Vampyrism aura and/or scrimshaw if healing is a serious issue. Along with your yak, you could shove a pony pouch and scrolls in it so that you can change familiars once you run out of food. Realistically though, you should be doing QBD instead of Graardor if you are having issues with trip length.
Rotom-w isn't a problem. Its usage has fallen off a lot. Venasaur screws it, Excadrill screws it, Breloom screws it, Charizard, Gardevoir screws it, and plenty of other things.
Sceptile-M will be garbage. It's special movepool is garbage, and it is just ice shard bait like all other dragons. They should have given it a better secondary typing like poision or even, dare I say it, flying. Flying makes much more sense for sceptile than dragon. Swampert-M should have gotten sap sipper as an ability. Swift swim doesn't help it as it is still out-sped by a lot of things. Many walls can just come in on swampert (ferro) and stop it dead. Two really missed opportunities to do something good with those pokes.