What could be the problem, I have vibration during acceleration only. Ease up on gas no vibration.

None of the things you mentioned will cause a vibration under acceleration. Only the brake rotors will cause a vibration but that won't be limited to acceleration. The most common cause is tight universal joints. A less common cause is a collapsed transmission mount that causes a change in the drive shaft angle. Sagged rear springs can do that too, but the vibration will generally occur while cruising, not just when accelerating.

Have the tires/wheels and wheel alignment checked out-could also be the transaxles

Start checking the drive line for worn joints or a damaged shaft that may be out of balance.