If you're properly weighted, I don't think you'll miss the back inflation part that much while diving; whatever air is in your BC at depth is going straight to your back anyway when you're in normal horizontal dive position. At the surface with lots of air in it you'll notice a difference.
I'm assuming you're a new diver, since I think you mentioned that this is your first BC purchase. With that in mind, buying an inexpensive BC that will get you through a few seasons of diving is an excellent idea. When you have more dive experience, you may want to try a different style of BC (many divers do) but you won't know what's right for you without that experience.
Nice job with the no-risk service, scubatoys!