It sure is. The tastiest kind.

1. Rage gives you damage resistance and advantage on strength saving throws. It’s what makes barbarians tanky. Berserkers rage turns into frenzy which allows them to use frenzied attacks and frenzied throws as bonus actions.

2. Weapons! Any weapon with the thrown tag (daggers, spears, javelins, handaxes) will deal their damage when thrown, plus any bonuses you have to throw attacks. For example, you really want the tavern brawler feat if you like throwing stuff because it gives you a bunch of extra damage. There are also items like rings and gloves that give you extra throwing damage. If you’re interested in multi-classing, the eldritch knight subclass has a feature called bound weapon that makes your main hand weapon return to you after being thrown.

3. No, the only downside is the cost of supplies. Rest all you want and let the continued storyline explain the tadpole and transformation.