Question

How can you best combine these two sentences into one sentence with a parallel structure?
He spent most of September visiting parks. He flew kites for most of October.

Answer 1

He spent most of September visiting parks and flying kites in October.
He spent most of September visiting parks and most of October flying kites.
He spent most of September visiting parks and most of October he flew kites.
He spent most of September visiting parks and flying kites for most of October.