RamsTennis--there is no need to apply anywhere until you get your new scores at the end of October. Even if you are considering an Early Decision or Early Action plan, you will still have a little time (although perhaps just a week or so) between when you can view your scores online and when you must apply. (If you order scores sent to colleges with Nov. 1 deadlines and the scores arrive shortly after the deadline, you'll be fine.)
With Rolling Admission colleges, it can be wise to apply on the early end. But if you are already a strong candidate at a Rolling Admission school, it won't hurt to wait until the end of October to apply. If you are a marginal candidate, you'll want to submit your best SAT results, so, again, waiting until late October to apply is advisable.
If you are interviewing in August, you may find that you are never asked about SAT's at any of the colleges you visit ... or you might be. If you ARE asked, and your scores are below the norm at the college, you can answer the question by saying, "I'm taking the SAT in October." (Not a lie!) If the admission official persists (unlikely), then explain to him or her what you have told us.
If you are asked about SAT's, feel free to boast about any other, good scores you've gotten ... e.g., AP results.
Finally, if your October scores are also not as high as you'd hoped, it may be time to revise your college list. Don't give up on "dream" schools, but do make sure that your roster includes places you like that are sure to welcome you, regardless of your test results.