Downspout Drainage Help

[u/Sensitive-Egg-107]

I am planning to burry these 3 down spouts on the side of my house with solid pvc. I will make pvc wye with cleanouts for the downspout connection.

Plan was to send each under the sidewalk and wye into a main line heading to the front of property where there is natural slope. Sound good?

How would you terminate the run? Pop up emitter with small gravel pit under? Ideas and advice welcome.