To make it easier on yourself consider floating more of your geometry. Right now your cryo-tube is all 1 piece of mesh which is a lot, but you have repeating elements that could be floated on. One of these radially symmetrical elements could be UV'd once then duplicated so the UVs are stacked to save on texture space.
To make it easier on yourself consider floating more of your geometry. Right now your cryo-tube is all 1 piece of mesh which is a lot, but you have repeating elements that could be floated on. One of these radially symmetrical elements could be UV'd once then duplicated so the UVs are stacked to save on texture space.