You're thinking too defensively. Start by trying to get the jobs/internships you're really interested in. When it gets down to only a few months before you'll need a job, then begin to consider settling.
Lining up a job in October that's not going to start until more than six months later seems like it would have risks of its own. Company priorities, finances, and even ownership can all change in that time, possibly affecting your offer.
Lining up a job in October that's not going to start until more than six months later seems like it would have risks of its own. Company priorities, finances, and even ownership can all change in that time, possibly affecting your offer.