While the Avenger may not be as horrible for sub 250' throwers the Leopard is the better disc. Not knowing where you are at distance and form cleanliness wise it is hard to say if you should drop all drives for now or not. The Avenger SS can magnify user errors so it ain't the best learning tool. Doubly so in the wind but the Leo ain't the best wind disc either. At this point i don't have data to give you an educated guess about the timing of getting to learn drivers. General rule of thumb for trying out drivers is getting putters over 200' or better yet 250'. Up to that time long mids or in between mid and fairway drivers should work. The usual long for mids/tweeners are Coyote, Stalker and Squall. Out of those the Stalker fades the most and handles the wind best. Better than the Leopard. Coyote has the lowest power requirement and the Squall is in between those two. So if you're unhappy with the ASS i'd pick one of those. For best user error tolerance i'd pick the Stalker and for the straightest shots the Coyote.
Flat shots need running on the center line of the tee and planting each step on the center line. Anhyzer needs running from rear right to front left with the plant step hitting the ground to the left of the line you're running on. Hyzer is the mirror of that.