Have a look at Rant. I could see that using fs at home, especially without a full set of flight controls might lead to becoming lazy or gaining bad habits on checks, startup procedures, that kind of thing as they are easy to skip when you want to just get in with flying holds or whatever. The joy of Rant is that it already assumes you can fly, and it becomes just cursor keys to turn etc, I know that sounds contradictory to what I said above, but I have tried both and Rant does leave you free to think much more about situational awareness and the ground track/vertical profile/effects of wind whilst being abstracted from the cockpit. One further thing I found was that trying to practice instrument skills and partial panel on a computer rather than with an instructor has lead to a poor scan that I get by with but needs work to improve. One thing about doing that part for real is that a good instructor will be able to tell where your scan is deficient and coach you to improve it. Hope this helps.