Walleye Hotspot?

Only have about four hours to fish, likely my only trip this season, and I’ll have two young kids with me. I’ve attached a map and blurred the lake name since it’s a private lake and I’m trying not to upset anyone.

Depth shading on the map:

• 0–5 ft: red

• 5–10 ft: orange

• 10–15 ft: yellow

• 15–20 ft: green

• 20–25 ft: blue

Based on the structure and depths, where would you start for walleye with limited time?

Thanks — appreciate any advice.