I' m considering playing Tennis Elbow on ITST, but i need more info about the game. I tried the demo a year ago and i didn't like it too much. Now, because there is no other tennis game i can play on PC, i have no alternative.

I made a list of questions about Tennis Elbow and the ITST tour so i can get informed and decide whether to spend the money on it or not:
1. As i stated at the beginning of the post, i only tried it a bit a year ago so i'm completely noob. How difficult is it to learn the mechanics? How long does it usually take?
2. I understand that you can only use pro players in online tournaments. Is that right? Why can't you use custom created players?
3. Can you play this game well enough with keyboard and mouse or you must own a gamepad in order to be competitive?
4. How's the level of cheesiness in the tour?
5. Does the tour have many problems with filling up tournaments? The WO and no match lists are big?
Thanks in advance!