Mike,
You might be able to sell the lenses separately. However as noted the enlargers will need to be sold locally unless there is something particularly desireable with that unit that someone would be will to drive to pick it up, or pay for the shipping.
I see a number of 4x5 enlargers selling for little in the Toronto area, and of them all but being given away.
You might have a look on the local Craigslist to see the range and availability of enlargers in your area.
Good luck,
Len