Sounds like you are being busy.
Why are you servicing the air con before removing it?
Seriously though, you'll need to swap the heater box for a non climate control version if running without A/C.
You may be able to modify the current wiper set up to run a single wiper, the link is to my how to from my maestro and gives the basic idea.
http://home.btconnect.com/talkingcar...er/wipers2.htm