I have to agree with dyzzypyxxy that a Japanese Maple will take years to mature and your careful research is certainly warranted. Contacting the Missouri Botanical Gardens might be your surest bet.
http://www.missouribotanicalga...
Even in my climate where many Japanese Maples are treated as full sun trees, some leaf burn can occur in particularly hot and dry summers. It's usually minor and so not objectionable and doesn't significantly affect the trees.
