Hmm, if you're planning to mine bitcoins directly from those hardware, I strongly advise you to not execute your plan. You'll end up paying your power bill higher than it was before and may end up getting a burned-out rig. Mining operations are profitable for those who have enough $$$ to buy the most advanced hardware and operate in a large scale. For the solo miners, it is a downhill road to lost your investment. Mining bitcoins with such hardware are profitable back in 2009-10, but as of today, I don't think you'll even make 1 bitcoin within a span of 2 years.

Well if  you still want to continue mining, try searching for an altcoin that has some promising features that may be successful and might come out in exchanges. Try holding on some large amounts (and I suggest you to mine it when it still has low difficulty) and release those coins into an exchange whenever you think that you already have a good profit from it.