I agree, early September should be time enough for getting players signed up. Some of those released by us when their contacts expired in June may sign back on (someone mentioned Jack Brown and Lewis Hyde in this regard recently).
We also have a risk we could lose one or two more to Premiership sides in the near future (someone linked Ridgers with County, but I hope that does not happen).
For me, priority positions are right back and centre half. Currently we only have 4 defenders signed up, plus Toddy who can play there. A central midfielder would be useful also given Welsh and Vincent can be injury prone.
In addition, if we do lose anyone else we will need a direct replacement.