Nice job and welcome to BLF!
XAL7030 1uH has very high saturation current, 28A for -30%, the MP3429 has a peak inductor limit of 21A, so no risk there.
the efficiency should be similar to the second table here, roughly : thefreeman’s HDR Anduril 2 high efficiency drivers - update : FWxA boost driver - #296 by thefreeman
it’s 1.5uH so higher DCR but with lower resistance PFET (polarity protection) and lower sense resistor should roughly even out.
@Haukkeli used my BST21 driver up to something like 3.3 or 3.4A, with some thermal pads between the boost converter and led shelf.