Advertising strategy?

I have several ads for a game. I’ve advertised this before and it gets about 100-150 daily visits so it’s not unknown. One of my ads has a higher CTR than the others and I was wondering if I should spend 3-5k all at once on that one ad for one day? Or spread it out over several days like 1k for 3-5 days or 2.5k for two?? Which would bring more players and help the game grow further?

(The game in question is “Speed Run X” if you search that it’s the top result)