Nowadays, people often use 27-30 monsters, ~10 spells and 1 trap (Dustshoot. No one uses the field spell. No one ever used the field spell. That also means no things that search it, and no Jupiter. Max out Shine Ball.
Tour Guide, Gorz, Trag and BLS be good. Maxx "C" is a popular card in Agents. You could also add a 3rd Veiler. For spells, you could add things like: more Duality, Book, Creature Swap, Smashing, Mind Control.