Every time you get your tires replaced, they balance them. You ever seen them spinning the tire on a machine to make sure it runs true? They're balancing it.
If you've had a wheel alignment recently, you shouldn't need one again.
As for the breaks, if you're just doing the pads you can do them yourself, but if you've let them go for a while you may have warped discs. You can do these yourself also, but if you've never worked on a car it may prove beneficial to get it done by a professional.
If you don't bleed your breaks correctly, you'll be in for a thrilling ride
at the very least you'll have poor braking and the feel will change throughout the drive, as everything heats up and expands (if you've trapped air inside).
Also gemrock2hot - $100 for an alignment is pretty pricey.