About half my retirement portfolio is in an active account at TIAA-CREF, which is absolutely hopeless from a PP standpoint. Investing options are limited to a stock index with ER of 0.50, an active stock fund, total bond index, guaranteed annuity, and target retirement funds - no brokerage window. I decided to just put it in target retirement and hope for the best. At least that way I don't have to look at it, which is the only way I survived 2008

The other half is divided among several accounts, with about half (20% of the total) at a brokerage and most of the remainder in a Vanguard retirement account that I cannot roll over (it's under my current employer's plan). The Vanguard account has excellent stock index funds, but the only useful bond funds are VUSTX and VFISX (and no brokerage window there either). There have been previous posts talking about spreading the allocations among the various accounts, so I won't bore you all with the details. I just had a couple of questions for the group:
First, I'm having to rely on VUSTX for the majority of the bond allocation. To compensate, I'm buying 30 year Treasuries directly in the brokerage accounts with the idea of keeping them at 25 years or longer, and also counting half of VUSTX as cash. Is that reasonable? I've also seen some suggestions about balancing VUSTX with the EDV fund or zeros.
Second, with the plans splintered among several accounts, I'm trying to keep each one close to 50/50 between two asset classes so that I don't have problems rebalancing down the road. I also tried to put together different combinations, e.g. stocks + gold into one account, bonds + cash in another, etc. Has anyone dealt with this? It's almost maddening how these very nice retirement benefits can turn the beautifully simple PP into something more like the qualitative SAT.
Finally, there is a small account at TIAA-CREF that I could roll over and that would simplify things a bit, but it would be a one-way trip and I'd be giving up the option of using the annuity plan for cash allocation. That annuity is looking awfully good right now (paying just over 3%), and it's likely to be an advantage in future as well.
Thanks all for reading this far!