No, it is not close to the ground, but it is certainly not a stabilized approach which is standard operating procedure for a transport aircraft. If the approach is not stabilized, or becomes unstabilized, you declare a missed approach and try again.

Go with a 6" SCH80 PVC pipe with well "welded" endcaps. Put a smaller pipe inside it, also sealed, with dessicant packs inside it. Seal the items in vacuum bags similar to food storage bags . Water is not going to get inside!