This is what I used.
I got 7000 points (mostly because they lost life points attacking my monsters & I didn't wait for the final turn).
Control the duel, destroy monsters, if you can avoid lowering their lifepoints that's great, it's not the end of the world if you don't. I used rosemary + garden to switch a defense position monster into attack position & blasted it with Ra. Having rose lover in the grave and archer in your hand can help you accomplish this & block a potential trap on the final turn.
I tested the deck and I find it really not top for farm...
Always forced to quickly finish the fight because the opponent but all these monsters in attack mode, if we leave him he automatically invokes a Masked Beast Des Gardius / The Masked Beast...
In the end, on several duels, impossible to go up to 3000 points at the end of the duel.