The risk in the paired pools is the missed appreciation of assets while you own LP tokens representing your staked assets- i.e. impermanent loss. I don't have near as much as you since I'm late to the game but I'm slowly chugging on. Even staking CAND you run the risk of SGB appreciating and not being able to buy back as many sgb (or whatever asset) as you traded for them. Unless you are taking out a nest loan for CAND against your sgb collateral. I'm currently only in the one sided pools and funneling all rewards into the sfin pool for more sfin. Those higher risk rewards are tempting me though.