Dude! as a guy who mounts and balances tires for a buck, I can honestly attest to the fact that it takes less time and skill to balance a tire than to mount it. As for saving money in the long run. It ain't gonna happen. those tires will bounce up and down the road beating themselves to death. Causing the tires to develop a wear pattern (If I remeber correctly, it should be a diagonal wear pattern with each diagonal area alternating up and down in relation to the other). this assumes somedbody isn't using a bubble balancer. BTW you could have mounted your tires by yourself by hand. If the rim is 15x8 or 15 x 7 and they are 235's or 255's I couldn't see clearly (but they looked like 235's) you just had to lube them up and work them on by hand. (easier than it seems with aftermarket rims designed for drag racing). The harder part would have been airing them up if the tire was a bit to narrow on the rim.
Anyways, IMO I would get tape weights and statically balance the wheels (put weights on the inside)
BTW, I dunno where you live but if your in the Va area, specifically the peninsula, Then drop by the Costco in Newport News, and ask for me (they might look at you wierd if you say MiracleMax
), but they only charge 4 bucks a wheel to balance a set of mounted rims and tires. In any event if you are close to a Costco and are a member, you can't beat 4 bucks a wheel to extend the life of your tires.