Is that really all of your options? It is really weird to not be able to have better exposure to large companies. I think you should choose a balanced portfolio over low expense ratios. Low expense ratios are great, but they aren't all that matter. I'd definitely prefer a diversified portfolio, even if I had to pay a little more in expense ratios. My suggestion would be to combine both your pension and 457 funds to meet your allocation with the following funds:
RNPGX is a good world fund, with 50% assets international and 50% US large funds. You could use that for all of your international holdings, or include some ODVYX if you want to add a little more risk with some emerging markets.
PRILX is the best large company fund, so I'd use that for the rest of the large fund in my portfolio. And a bonus, it focuses on socially conscious investing.
For small funds, everyone pretty much agrees that VSGIX is your best choice. And for bond funds, your only option is PTRQX. So put it all together, and I'd go with the following if I was in your shoes:
30% RNPGX (count as 50% international, 50% large company)
5% ODVYX (could omit and increase RNPGX)
35% PRILX (Could be split or replaced with FCNTX if desired)
20% VSGIX
10% PTRQX