My main is othell and it makes sense to make my dual archer. The limitation for you is the armor because you are feoh. You need to finish your first and second exalted because you'll get exalted weapon and armor and the stone for improving exalted weapon plus dragon shirts, level 3 jewels etc.. I guess you know that you will get probably retributer from the quest but you can exchange it for bow. Also do the quest for the circlet +5. If you can farm exalted 1 and 2 in bloody swampland - it's super because you can literally rot there on aoe skills and mobs are easy.
Also the spellbooks you should learn on main but once learned they apply for dual as well. Same applies to dual certifications skills.