It's true that the biggest signature of a sound system is accomplished by the speakers but without a good amp, their sound will not be what it should. I don't think that my suggestion of buying whichever came as the best deal first was a bad idea. You can add the other component (speakers or amp) at a later date. Have you ever tried a different amp with your speakers? Maybe you could demo one from a friend or even from a store to see what it does for your speakers and then make the decision. You might also demo a 30wpc amp with the speakers that you are looking at to see if it will adequately drive them, which I doubt. You would hear quite a difference going from 30wpc to 130wpc. The difference in loudness isn't the big deal, it's the bass response and clarity that you'll get and that should improve dramatically unless your speakers were only rated for 30 watts, which I imagine is not the case.
Bill