This is good but what about low actual load and MAF?
Not sure how you are determining whether or not it is "low" or not. Your MAF might be a tad underscaled, but your fueling looks like it is compensating for it just fine. In any case, underscaling isn't a bad thing; you're less likely to run into odd limiters that would require even more tuning.
What does it matter if your LTFTs and lamba control is close enough to 1?