At the top of the AWD foodchain cars handle very well.
There is generally no wheel hop, because the added weight and traction of the front wheels allows the car to accelerate using all 4 wheels and thus there is far less resistance to getting going- AWD cars are not known for massive wheelspin
BUT you are proposing to fabricate a system on a chassis not designed for it. Audi spent ungodly sums to make their cars work and work well. Subaru spent years and fortunes to make their cars perform as well as they do
You can make an AWD Mustang-but making it AWD doesn't mean you will have the handling of factory AWD cars, just that all your wheels will turn under power (more friction, more weight, more of all the bad stuff and maybe a little benefit if you get lucky)-more likely is that you will get a quirky handling car that you will spend tons of time trying to sort out.
