Thanks for all the replies. For clarity he said that whenever I took a distribution it had to be the whole thing. It did seem bizarre to me but I know that plan rules can be more restrictive then the federal rules allow. Mostly I went forward because they offer those low cost index funds most of us love.
It sounds like it's possible the plan says that so I'll be sure to get clarification before I put too much in (as I mentioned there are other vendors I could also chose from).
And Gronnie, thanks for pointing that out the rollover option. It could be a good safety valve if it ends up bigger than what I'd want in a single year.
I guess too. I could leave it in this plan and transfer to another 457 at the same company with more flexible distribution rules as I get closer to retirement.
In your shoes, I would:
1) Verify whether the bolded assumption is correct or incorrect
2) Verify wether federal rules ensure that one of your options will be, due to federal law rather than mere plan rules, to "lump sum distribute" into an IRA upon leaving employement
3) Probably conclude that if 2 is true, and especially if 2 is 2 but 1 is not, the key to safety is whether having the funds in an IRA after employment is an option that suits your plans
4) If 3 is true and an IRA suits your plans, figure that my 457 money is on its way to a good account that I can control, even if the 457 itself has limited disbursement options. In that case, I'd pour money into it if the investment order shows it as the best option.
https://forum.mrmoneymustache.com/investor-alley/investment-order/