Pro Tools as a compositional tool

I worked on my arrangement of Theatre of Cruelty tonight using Pro Tools. I wanted to feel that step closer to the finished product in composing for this project - being able to hear the arrangements straight after I think of them. So far I have recorded three electric guitar parts and an electric bass part for the intro. My main reaction to what I heard was that it would be better suited to strings. I am going to continue these composing sessions recording in Pro Tools, because I feel like I will benefit a lot from this process, especially seeing as it requires me to actually execute parts written for other instruments on the guitar.