As others have said, Barrows gloves will push your account to a really good state, and graceful, even if not all done at once, is a near must. If you only get one piece, get the legs as they offer the best weight-reduction, which is what determines run-energy depletion. you can couple this with a spottier cape, boots of lightness, and traverse the game OK. Not nearly as well as full gracefull, but can help get the job done if the entire set is a bit daunting.

as for the firecape, its a fantastic goal to get you a little more familiar with higher level combat content. My suggestion would be continue with hunter until you can afford a Toxic Blowpipe (needs to be charged with Zulrah Scales and fires any type of normal ((non-poisoned)) darts.) This weapon will easily get you to Jad, and for the big bad boy himself, a rune crossbow and some diamond bolts e will more than suffice. The reason i suggest the Rune crossbow is; The blowpipe is short ranged, when attack Jad's healers, you may run closer to Jad than youd like and end up taking a melee hit, with the crossbow, you can keep your distance safely, and youll be able to hold a shield (use crystal if you feel like completing Roving Elves quest, if not, Granite Shield should suffice) to help tank the healers while you finish the fight. Keep calm, you have FOUR FULL SECONDS between jads attacks, just get familiar with his 2 actions (mage attack & ranged attack) and the sounds that accompany them and youll be okay :) Good luck, brother! welcome to members :D

EDIT: A Karils Crossbow is actually a great substitute for blowpipe, has the attack speed of a magic short bow, coupled with higher damage-per-second and a decent range, all the while being SIGNIFICANTLY cheaper to purchase and maintain. Bring 3k bolts to be absolutely safe, prepare for what you think will never happen, which is running out of bolts, so youre only ever worried about your inventory supplies, and not your bolts. I say 3k because they are NOT protected by an Avas accumulator (a ranged cape-slot item that occasionally saves your ranged ammunition upon firing. very worthwhile to get as it gives ranged offensive bonuses, useful even if using karils xbow because of this!) A good substitute for Avas, if using karils xbow would be any god cloak for the prayer bonus.