It will probably be very specific, I've searched online for places that do custom swords but they are not as specific as I'd like.
The most important feature will be the engraving on the blade.
A lot of times the people that forge blades (that have websites) don't do any tsuka work. I am guessing you don't have at least $2000 to lay down on a blade either. Getting a custom japanese sword made is terribly expensive. Rick Barrett makes some of the most beautiful blades in the US and his site is at http://www.barrettcustomknives.com/ . The engraving would have to be done by the maker and should not be done afterwards by someone else. That's going to be a tough one.
For the tsuka, if you are willing to do it yourself, Fred Lohman has a wonderful site with a wide variety of supplies. His site is at: http://www.japanese-swords.com/
Sharp Hand forged Full Tang Blade Japanese Samurai Wakizashi sword Dragon Tsuba, Hand Forged Japanese Samurai Katana Sword Dragon Tsuba Sharp Blade, Hand forged Butterfly Tsuba Japanese Samurai Wakizashi swordCarbon Steel Blade, Sharp Hand forged Full Tang Blade Japanese Samurai Wakizashi sword Dragon Tsuba, Hand Forged Japanese Samurai Katana Sword Dragon Tsuba Sharp Blade, 40"Razor Sharp Hand Forged Phoenix Tsuba Japan Samurai Sword Cut Bamboo Blade, 40" Razor Sharp Hand Forged Matrix Tsuba Japan Samurai Sword Can Cut Bamboo, hand forged red japanese samurai katana flower tsuba sharpened blade fully tang , hand forged japanese samurai katana golden dragon tsuba sharpened blade sword, Hand forged Butterfly Tsuba Japanese Samurai Wakizashi swordCarbon Steel Blade, Hand Forged Japanese Samurai Katana Sword Dragon Tsuba Sharp Blade, Hand Forge Japanese Samurai Katana Sword Dragon Tsuba Full Tang Blade Sharp, Hand Forged Japanese Samurai Katana Sword Octopus Tsuba Full Tang Blade Sharp, Hand forged Butterfly Tsuba Japanese Samurai Wakizashi swordCarbon Steel Blade, Hand Forge Japanese Samurai Katana Sword Dragon Tsuba Full Tang Blade Sharp, 40"Razor Sharp Hand Forged Lion Tsuba JP Samurai Sword Cut Bamboo Blade, hand forged japanese samurai katana OX tsuba clay tempered sanmai sharpene blade, 40.6" Hand Forged Japanese Samurai Tachi Sword Dragon Tsuba Sharp Blade, Hand Forge Japanese Samurai Katana Sword Dragon Tsuba Full Tang Blade Sharp, 40.6" Hand Forged Japanese Samurai Tachi Sword Dragon Tsuba Sharp Blade, Hand Forged Japanese Samurai Katana Sword Octopus Tsuba Full Tang Blade Sharp, Hand Forged High Carbon Steel Japanese Samurai Katana Sword Carved Tsuba, 40.6" Hand Forged Japanese Samurai Tachi Sword Dragon Tsuba Sharp Blade, Hand Forged High Carbon Steel Japanese Samurai Katana Sword Carved Tsuba, Hand Forged Japanese Samurai Katana Sword Octopus Tsuba Full Tang Blade Sharp, Hand Forged High Carbon Steel Japanese Samurai Katana Sword Carved Tsuba, Hand Forged Japanese Samurai Katana Sword Octopus Tsuba Full Tang Blade Sharp, Hand Forged High Carbon Steel Japanese Samurai Katana Sword Carved Tsuba, Hand Forged Black Musashi Tsuba Japanese Samurai Katana Sword Iaito Full Tang, Hand Forged Japanese Samurai Katana Sword Octopus Tsuba Full Tang Blade Sharp,