Yes, WiFi & Bluetooth both work flawlessly, using the above dtb.
About eMMC, there is no support for it in Official images by LE. Internal Storage is not recognisable at all.
Images by bybalbes150 do have eMMC support and you can install to it through LE Settings Menu.
Thanks for the info...
Because of the missing EMMC support I stay balbes150 Imgages ... even if no suitable AArch64 images are created at the moment.
In combination with the DTB of RecalBox everything works fine, even if with an older image.