Jiraya was only 3 tail level without sage mode.
Base Jiraya >>>> Pre timeskip kakashi.
It was stated and Kakashi agreed that Haku was stronger than Zabuza, since Kakashi and Zabuza were even at that time, Haku should be above Kakashi.
The Haku comment was likely hyperbole, given that Sasuke was his equal in taijutsu from what we saw.
Kakashi should take it, providing they all remain in base form. If transformations/powerups get involved, they'll overwhelm him (Shukaku alone would probably be too much).