TF, what a great collection! If you're determined to find a good home for them rather than sell them, my advice is speak to the curators, collectors and historians over on Key:
Historic Aviation.
Most of the major air museums have participants on that site, including they guys looking after the ex-RCAF Lancs. That's by far the best place to ask around. Be warned though, there are also several sharp collectors who will almost certainly offer you money. Of course going the fiscal route is entirely up to you.
HTH