My wife is self-employed and we're about to open a solo 401k with Vanguard.
We've got at least $2k/month to put in there. I'd like to automate a base amount every month ($2k or a bit more) and then put in more as we can, up to our max of roughly $33k/year.
First question: does it make sense to wait to make the initial contribution until we've got $10k so we can get into Admiral Shares from the start?
Also, I would love some advice on which fund(s) to put this 401k in. I'm 41, she's 39, and we'll likely continue working another 15 years. Two kids, 7 and 11. I have a 401a at work with $77k in FUSVX (just moved it there after realizing that the target fund I was in had a 1% ER), and contributions to that are $11k a year, for what that's worth. I'd be fine doing a couple of funds in the 401k but I have a general preference for keeping this simple.
Thanks!