One of my senseis feels that I should test for shodan in November. While I could probably muddle through the test, I do not feel that I will be able to perform at a level where I should be passed.
Is it inappropriate to ask to test later?
Good question. I would think it depends on the Sensei. Would the Sensei feel it inappropriate? Some Sensei have no problem, others would. Ask the Sensei or ask other high ranked members.