I spent years painstakingly exprting meshes from Poser to LW.
One full mesh export from Poser for each morph and then creating endomorphs in LW.
I have the base characters set up so that additional morphs can be applied to them as needed.
All clothing and props are separate.
I have a standard rig for each character which doesn't change.
I 'dress' each character in modeler where hidden body geometry is simply deleted.
IMHO this is the only way to go.
Compared to 'hosting' LW does a much better job of deforming the models.

I would never consider 'hosting'.