I think you'll be fine waiting unitl you reach 600 miles - after the trip, if I read you right. I changed with dino oil for the first change because I planned to change it again at 2,000 miles - just did it last night, full synthetic. I just change more often when it's new. 7,500 is too long for me. There's a vast array of opinions there, though.
Of concern to me is you're still breaking it in, and I believe both break-in camps (follow the manual .vs. ride it like you stole it) agree on 'don't just keep it at 1 speed for long.'
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'07 VN900 Classic
'99 Rebel 250
'73 XL175
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