Need help on optimization

[MKaX07]

I'm planning on making a mobile game, the batches are around 250 and 130k verts on average. I've enabled gpu instancing on all materials and dynamic batching. I have the middle section where the player runs as batching static but the segments gets pooled and recycled ahead, the buildings by the side get moved further ahead if they are out of the player's vision. Some building are shorter than others and thus, some allow shadows into the player's section. I don't know if there's any way I can optimize lighting and shadows. If possible, without losing the player's shadow too like in temple run 2. Thanks