Yeah Unity is a beast to download.. I am in a similar situation with Unity and Construct2 since in my downtime at work I can't use Unity due to my POS work computer but Construct2 works fine so I play around in Construct2 there and thumb drive my capx back and forth or dropbox it.
Like I said earlier I made a menu system.. that worked quite well, it was very basic and had a "Town Square" that led to a "Go into Forest", "Tavern", and "Quit". Each of these also had a "Quit" and "Return to Town Square". It took a bit of event making but I imagine there would be a steep curve at first but then as you progressed your chains would be easier based on the previous events you have already made. I imagine you could layout the entire framework for something like L.O.R.D. menu wise in a couple of sessions.
I would recommend you not try and stay too close to simply text and embrace some of the abilities Construct2 gives and like ROJOhoud said use sprites and the ability to hide/unhide objects and many of the other cool aspects of Construct2 to make it your own.
If your going traditional door style you wouldn't need a complicated inventory system.. most everything could be handled with variables.
This thread makes me want to revisit this.