Esposure to such large volumes of capital should positively affect SPS price. By my calculations, the DAO could repay itself the cost if SPS goes from USD .03 to .045, which i think itd do easily, as coins historically have.
If $SPS appreciates, which even @davemccoy says he thinks it would, we can create a proposal to cash out amounts of SPS into Stablecoins, leaving the DAO in a superior position. IMO its worth the risk, i dont think its that big of a risk personally, and i think it would pay off. Theres evidence to back it up.