That looks like a typical knight-centered list, and would probably do well against most things. I'm not sure that it fits your style, though. Impetuous armies are generally "point and shoot." You line them up and let them run forward. The trick is lining them up in the right place, so they have good match-ups when they hit the enemy line.
If you are looking for something defensive, you will probably prefer the Greeks. They can pack a surprising amount of heavy spear into a 200 point list, something Bob R. loves to do. I find it a bit boring, because it has very little mobility, but it's pretty resilient and can win games by sheer attrition.
The Scythians are a completely different army type, and definitely not defensive. What you have to do with them is get the attack, run as far forward as possible, shoot, evade, shoot, evade, shoot, evade, and hope that your opponent runs out of units before he chases you off the board.
If you are looking for a list that is unusual, but has some good options for units, take a look at Pyrrhus (no.44). His list has a mix of pike, cavalry, a couple of elephants, heavy spear (hoplites), and a few light troops thrown in. I played him in a tournament once, and every time I told my opponents what I was playing, they said "Who?" So, it's pretty likely you'll be the only one playing him.