Where do I get all the clothes I need for my disguise?

Hint 1 of 5:

Now's a good time to explore the rest of your house.

Hint 2 of 5:

Search your bedroom thoroughly.

Hint 3 of 5:

Get the outfit inside the trunk, the key inside the night stand, and
the claim check in the dresser.

Hint 4 of 5:

The key you just found opens up the locked desk downstairs.  Get the
letter inside the drawer.

Hint 5 of 5:

The barber has your boots.