Welcome hooligans!
With 3 - 4 years left, whether you go to 100% stocks probably depends on if you're planning on leaving it alone If so, it may be too aggressive. Stocks are extremely overvalued on an historical basis, and we don't know when the next day of reckoning may come. Next year... 10 years?
If you read anything from John Hussman (
https://www.hussmanfunds.com/comment/mc200712/) you'd probably be burying your cash in your backyard (not that bad

)) but his models do show that history suggests the next 12 years could be rather flat for stocks.
Now, where to get a return is a good question - bonds and cash pay next to nothing, but the main point is that stocks probably won't just be flat for 12 years straight. They'll go down, then up, then down, etc.
That's why I like to do more trading / market timing. It may not always work, but watching stocks plummet as a buy and holder can be very rough, as you probably witnessed in March.
Good luck, and thanks for joining us!
I have 25 yrs of BOP service and plan to work 3-4 more years. I'm currently in the 2050 with a $400,000 balance but was thinking of changing to 60 % in C and 40% in S and switching my future contributions to 100% S. Is now a bad time to do that?