The problem with being an shapeshifter adept is not the lack of augments, but rather the crippling effects of being dual-natured with no ranged astral attacks. You a permanently stuck on a plane where nearly everyone else can fly and shoot lasers, and you can only fight people who are willing to come right next to you. Also, your teammates mostly can't help. For this reason, if you want to be a physical combat focused shifter, I recommend being a Mystic Adept and using buffs on yourself, which gives you the ability to do some stuff to defend yourself on the astral (and also to summon spirits who can help on the astral).
If your GM is going to softball the drawbacks of being dual-natured, then shapeshifter adept is perfectly fine, depending on type - they aren't well balanced relative to one another. Tiger/Lion is the best if you want to focus on physical combat.