I think it's a descent placement for him. Much better than most of the other guidebook power levels. Goku hadn't used Kaioken yet when he said he was warming up so his base power level doesn't have to be more, and of course Freeza was still holding back under 5% of his power.
Around 4 million or so. Nothing wrong with the 3 million level, but I have Vegeta around 2.7 million, which seems a bit too close. I feel like a bigger difference would make more sense of Vegeta's statements about Goku.