That’s great news!
It is a fantastic piece of software and emulates playing with a jazz band beautifully.
That’s exactly it.
iRealPro is useful for moving away from the lead sheet.
By all means, use the lead sheets as a supplement to learn the tune. Once you have a good understanding you should play along with iReal and ditch the lead sheet.
You might need to occasionally glance over at the screen to see what chord you are on, but with time and practice, you will be able to ‘feel’ where you are in the form.
That sounds like a brilliant idea.
Some will work better than others. Any medium/up tempo tunes are well suited.
If you have any questions along the way, be sure to let me know.