I'd contact local cabinet makers and ask for an appointment to discuss ideas. Hope you get some joy, would be great to see your display!
Couple of old threads here with some ideas and info that might be worth chasing up...
http://www.imperialgunneryforum.com/t2894-custom-cabinets
http://www.imperialgunneryforum.com/t2025-wall-mounted-loose-figure-display-cabinets
_________________________________________________
Paul F,
thevintagetoyadvertiser.org 1970s and 80s vintage toy ads and other retro paperworks
imperialgunnery.com Vintage Star Wars action figure weapons and accessories guide