I feel that an archer is better than a swordsman for killing coon because coon will stand still and just take the attack from the archer. A swords guy would have to potentially tank barracoon for real and take his damage and it's a pancake to do that even on a life-leechy template, plus potentially you'll have to chase the thing around and that's a major pain in itself. You will probably not be soloing Coon (or, are you?) so as an archer you just stand next to a necro and let the necro wither the stuff off of you (and help him shoot the rat mages off when they appear). Not to mention that one of the popular gear choices for the life-leechy swords templates, the darkwood suit, has reflect physical which can be touch-and-go in Fel. Reflect physical is buggy and it appears that blues can use little tricks to cause you to unknowingly flag as aggressor on them and then they can kill you without taking a count for it.
IMO 120 bush is higher than is needed, but sure it's nice.
I don't understand the intended use of necro on that template if you aren't taking a necro form (which I like to do, and equipping items to help get up to the level you need to cast is helpful). Both wraith and vamp form archery can be really great at the right times.
Do all of these things together:
Be blue, ideally with high karma. Try to have high HCI (despite the lightning strike use), understanding that coon can spawn with over 130 wrestling and that will make your shots miss more than you like, even with max HCI turned on via lightning strike. You will want your natural HCI to carry your shots when you haven't leeched enough mana to lightning strike at it. Find yourself a bow that resembles this as close as possible: high swing speed increase, high mana leech, and enough DI to work with your items to bring you as close to 100% item-based DI as possible. Honor Coon before he takes any damage. Equip a vermin slayer talisman. Fire up Enemy of One. Have a necro that is with you use corpse skin on it and keep it that way. Positively keep Consecrate Weapon activated at all times, overlap the timing of the spell duration a little if necessary, and when you feel like you have the mana, try to keep Divine Fury on. Then, start lightning striking the coon and just go with the flow, letting the mana leech and the med feed your mana as best as it can. The strings of misses will interfere with the leech but just do what you can.
If you are working with a 710 skillcap, these template changes should do more damage than the one you put up:
120 archery
100 bushido
100 tactics <--- there is a damage increase reward for GM tactics
75 chiv <--- never fail divine fury
100 anatomy <--- there is a damage increase reward for GM anat
100 healing
80 meditation
35 necro
You can drop the med slightly if you need to boost up the necro further and then later if you find you can lower the necro back to 35 you could pop that med back up easily.
You can raise that skill point cap if you incorporate the hunters headdress, if you're willing to drop your real archery down to 100 to utilize the +20 to archery that the headdress affords.
The temp has no magic resist.... you better have a good macro for remove curse and carry a trapped box for even basic surviveability chances in Fel, if the raiders on your shard don't completely suck. This template can be strong in certain kinds of PVP but because of no magic resist its mage gank bait and if you can't build out the DCI well enough you will be everything-gank-bait.
Edit: fast bows such as a magical shortbow can be more troublesome than a slower one because of the balance between how much mana you leech back vs. the mana you expend to do your lightning strike. Lightning strike has the same mana cost per shot no matter the speed or damage of the bow, and the fastest TYPE bows (shortbow, repeater) do less damage per shot and therefore leech back less mana per shot. This means that it's harder to keep up with the mana requirements for sustained lighting strike with those type weapons. Try some different bows and you'll see how that works out.