802 in survival with the following setup: 2x archers max weapons no armor; 2x swordsmen max armor no weapon; 2x pikemen max armor no weapon; cavalry 2 armor and max weapon.
On day 2 you can buy a music ads as soon as you get 800$ (slow mode suggested). This allows you to stop the only guy who otherwise would slip through and get the 1000$ bonus. You still comply with CDArena strategy