When to do first oil change on SS5060 - Now or spring?

I've now got 7.5 hours on my new SS 5060. I'll probably do another two cuts this season and then the machine will sit until spring. I could change the oil now, or I could wait til spring and this oil will have about 9.5 hours on it. Would it be beneficial to wait until spring to put fresh oil in, or let it sit all winter with the new oil in it? The mower will be in my unheated garage (but warmer than outside) for the winter. What do you think? Thanks.