CRP5 handles low speeds perfectly well. I use it for a PA-28, if you want to fly for a living why purchase a CRP1, you will just have to get a CRP5 anyways.. also the CRP5 is bigger, easier to use.
The club I fly from has got software that does what you want, however I can't remember what it is called. Will check next time I fly...however I reckon it is worth the time using the crp-5 to get used to it.
cheers,
tom.