If you've go a deck that can dish out a lost of damage, it's very easy to get all the rewards. If you could force a monster to stay in attack position on Primo's field, Chimeratech Overdragon would be hilarious, but you are better off using cards like Blade Armor Ninja with powerful equip spells.
Considering the Ai, you want to keep it simple. A Rank 4 warrior deck could work, using Blade Armor Ninja, Gagaga Samurai, Power of the Guardians, and a pair of something like Big Bang Shot to give piercing. Probably Ninjas or Six Sams with how well they can swarm the field. Youll want to steer clear of most synchros so Wisel can't steal your win condition.
I have like 2 copies of Gagaga Samurai, should I make a deck based around them, complete with my 2 copies of PotG and other Equip Spell cards and/or Gagaga support?
That could work considering how well Gagaggas can swarm. Witch, Coat, and Utopic should be maxed out, and you could use the draw spell to boost consistency... although I'm not sure how well the ai could play onomats, so be careful of that.