First of all, as other people mentioned, don't unbind S. Change to legacy camera so you don't walk backwards.

I personally don't like using the function keys to select party members because that takes my fingers away from my movement keys (I use WASD). I just use my mouse to click.

Third, and most important tip is, get a MMO mouse. I use the Logitech G600. It gives you access to 20 keys just on your right hand so your left hand is almost always on WASD. I only put very limited skills on my left keyboard area, mostly skills with longer cooldowns. It takes a while to get used to but I guarantee you it will take your play to the next level, especially on melee dps.

I don't work for Logitech btw.