Prudential was the company offering the 457 plan where I last worked. Their offerings were expensive and of poor quality. There was lots of turnover as their three star actively managed funds mysteriously deteriorated into two star funds, which had to be replaced at the end of the year under the plan rules.
The teamsters either negotiated their own funds or these are your plan's add-on costs to the underlying fund costs. Pull up a couple of detail sheets on these funds and see what the real expenses are before making any final decisions.
In general, where Prudential has an interest, I would favor the index funds. The three US stock index funds are likely among the better choices. I would want to know what was in the international index fund before investing. Cash waiting to be invested should probably be directed to the stable value fund, as it probably pays a decent interest rate. I still have cash sitting in the old 457 because it's paying around 3 percent. I'm not personally a fan of bond funds right now because of interest rates. In your shoes, I would look at the holdings and average durations. If they are any longer than tomorrow (ok, maybe three years), I would hold off for now. My bet is average duration is going to be 6 to 8 years. Others will disagree and tell you to come up with a long-term asset allocation and invest accordingly.
If the underlying fund expenses are high, check out the brokerage account option. Once you have a sizable stash, paying Prudential brokerage fees in return for access to better funds and ETFs may be worth the price.
Let us know what you find out. Who knows, maybe Jimmy Hoffa is running the Prudential UPS Teamsters 401k plan under an assumed name as his job in the Federal Witness Protection Program and got the UPS drivers a sweetheart deal!