I think you will be okay but if I were doing it I would have drilled holes on 4 sides of the poles and inserted 3/8 ths inch rebar about 4 inches deep and leaving about 3 inches sticking out. Doing this before the concrete around the edges woulld pretty much guarantee the poles stayed in place and didn't come loose from the concrete due to shrinkage.
Dennis (cut2it)
C&onstructi&on C&onsultant
Over 40 yrs. as General Contractor for new const. & remodel - retired with time for you.