This can be caused by a number of things all acting together but with Subaru all wheel drive, tire circumference is critical. All the tires must match. I would start with checking and verifying your tire pressures are equal.
The noise from the right side sounds suspension or CV axle related. The squeaking and clunk sound like a hub bearing, ball joint or control arm bushing (something suspension related). It could also be a CV causing problems. If you're not familiar with suspension work, have a good shop (that also does alignments) check it out. Often inspections are free or not too expensive. If the car is handling strangely, it is a safe idea to check it out or have it looked at. hope this helps