Hello! I have completed a first listen and looked over the score. I hope to do a deeper dive and analyze the score thoroughly, and the following are my initial thoughts. Very much classical style, and quite refreshing to hear something in that style again. Check your engraving. Over the entire score, you have rests with dynamic markings. Page layout can be bigger or staves made smaller. At least 4 measures per page. There is key information missing from the score. If anything, the number of instruments as well as copyright information. You just say "Flute, Oboe, Clarinet," however, do you intend for more than 1 player for this part? Between the two movements, in Musescore, you can add a "SYSTEM BREAK" which will end the piece and add a pause after a double bar line. On the next page, it will list the full instrument parts again. (in the layout palette) With the literal music, there is more play you can do with the structure or in your accompaniment parts I think. 5-minutes for a classical symphony is on the shorter side and you can mess with the idea of a repeat after the exposition and utilize a 1st and 2nd ending to propel yourself into the development. It's not a "double exposition" per-say, however very common for the music of the time.