Yep, your choices stink on ice (credit to Mel Brooks for that description).
I would look at the two equity index funds, the S&P 500 and the S&P 600 (small cap), for the bulk of the money if these were my choices. The Principal mid cap has higher expenses at 0.81 percent, but the performance has been acceptable. I would probably put some in that fund. Your stable value fund is horrible. My 457 plan pays 3 percent. If you want bonds, my choice would be the Pimco core bond, but I would probably look for a better choice in another tax deferred/tax free account. If "Bond and Mortgage" includes mortgage backed securities, that's too much risk for me.
Target retirement funds are often funds of funds and have two levels of expenses. If this plan charges 0.94 percent for the target fund on top of the ER's of the component funds, well, that's ridiculous.
Sorry you have to tolerate this. Your HR department should be embarrassed to offer this plan.