Playing meta deck is the quickest way to climb up to 30k DP, but once you get there you will need to use deck that counters meta. Buster Blader, Vampires and Stall should work well against current most popular decks (Koa'ki and AG). But like all the previous KC Cup, I won't take the 2nd stage too serious, I just play 3 games each day for 50 gems. My F2P account isn't capable to climb more than 40k DP, also playing 20 hours a day just for some meh rewards isn't my type
This proves that I can still perform well even with only 3-4 duels per day (I only care about 50 gems, not interested about climbing). And I don't even use Koa'ki or AG. All my duels were using SSA deck
If only KC Cup SR ticket contains Tethys and Toon DMG, maybe I would try to get at least 20k DP. Anyway, congrats to the top ranked duelist. TsunTsun is great player, he is a regular participant in Duel Links Meta tournaments