Weather looks good offshore for th, fri, sat. with light wind and a tiny swell. So I'd try one or two of the closer off shore spots- South Bank or Outer Lighthouse or even Southwest corner on the first day. Then try the Gibraltar/Swale side of the Broken Group the next day if that doesn't pan out. Out from shore in Imperial Eagle Channel might be ok. Probably mostly cohos.
There are a few lings on the Seaward side of the Broken Group in the rockpiles. Lots of them are a centimeter under.
I've never fished there in September and I don't know how many guides still have bookings. Generally, but not always in Ucluelet, if there are no guides fishing where you are, you could be doing better elsewhere. See if they turn right, left, or go straight out at daybreak when they exit the harbour. Good luck.