I think it would very achievable to do, so achievable I don't think its worth trying for a challenge, there are easy no hit areas in the queens lair. The hardest part would be getting the seal breakers and dealing with the mist since you won't have wisplight. But even the stagbreaker could deal with dungeons and the queen

You get 6 or 7 stew for one serpent, the work is worth it imo. mistlands tier food accessible from swamp tier. Bit of night time sails, a few arrows and this pays off, 3 serpents is basically a full stack