You sould have the new tires mounted FIRST, then have them do the alignment at the same visit.
In my opinion the new tires go up front. The steering tires need the grip.
You should check to see if your tires are bald and are not durable anymore.
After
Yes, you should have balanced all 4 tires.
If you are wondering what criteria has to be met when shopping for new car tires because you are considering on buying new car tires for your car, then you should follow the easy guide for picking out tires for your car.
The new tires should be placed on the rear axle to lessen the risk of hydroplaning.
All tires should be balance checked before being placed on a vehicle. If the tires are not balanced it will cause uneven wear and they will not last as long as they should.
If you are wanting to buy some new tires and new brakes for your new care and do not know where to buy new stuff, then you should take a look a Car Accessories For Less.
How long your tires last depends on how you use them and where you drive with them however they should be able to last as long as comparable new tires.
if your shocks are bad change them first. Other wise it can mess up your new tires.
Discount tires can be found at your local tire repair shop. but do note some times the price is the same if not less buying brand new. Tires should not be used they shoould be bought new.