Wyvern Armor wont cut it, you will die in 1 hit, only Draconium armour that is heavily upgraded will work if you have a large capacitor with you.
The 98 hearts of damage per shot with 0.25 seconds between shot TC crossbow in the first post of this thread blows the draconic bow out of the water Signalum Crossbow? and, best crossbow possible? : feedthebeast
EnderDragon isn't a problem but for ChaosGuard you should really get Draconic Armor first. killed all chaos guards with staff of power yet, which deals 300 damage when upgraded fully. also final strike from thaumcraft will give you the chance to deal triple(?) damage. (you get the enchant by using osmatic enchanter on a thaum weapon and disenchanting it then) - put last stand 2 on your armor and take lots of xp levels with you - take 1 or 2 full upgraded draconic capacitors with you which recharge your armor/weapon - upgrade your hearts with tinkers to 40, and if you got it take that botania ring which gives 10 extra hp with you charm of dislocation set to some location out of the chaos island is also good to have, so you can quickly teleport away if you are going to die
No iys not because normal the d4agon deals about 4 hearts with maxed draconic with last stand it takes u to 1/2 heart up to 39,5 hearts
Yeah i got 2 shot with 2 draxonic capacitor with maxed armor enchanted wih last stand and 200 levels of xp