Will be living in Rabat for 6 months next year

My wife and I and our two small children will be living in Rabat for 6 months next year as we explore the great country of Morocco and get to know its people and culture. We've traveled to other countries around the world, our last trip was to Malta where we stayed for 2 months doing the same.

We want to stay in Rabat because it looks like a good central location to explore the other places of Morocco easily. It's also a little close to Casablanca but not so busy/crazy, we're not really "big city" people.

My question is, what districts or neighborhoods should I look at when I consider renting a flat in Rabat? I've heard Agdal and Souissi are the usual districts for expats? Or are there better considerations?

I've estimated a budget of about $17k/USD for our 6 month stay, does that sound about right?

Any tidbits of advice for us?

Thanks for your help!