Got2Gnow - Steve340 has provide the information I did not know. Steve340 I am not follwing you on your low/high speed relay comments. Please provide more explaination.

Got2Gnow - Your sequence of operation will work. But you need to incorporate the wiper park connection. You could separate the wire from the park side of the DPDT and run directly to the low speed terminal of the wiper motor. This should accomplish the wiper "park mode" as Steve340 explained.
Ron