For domestic stocks, I'd suggest holding, in about a 3:2 ratio, FDXAX : PSSMX. Hold, in your Roth IRA, in about a 4:1 ratio to the total
of these two, an S&P 500 index. This will approximate the total market. Fill the rest of your domestic stock allocation with total stock market in your Roth IRA.
ADFAX and FVIAX are the better bond choices. I'd avoid OHYAX entirely ("high yield bond" is a euphemism for "junk bond"). LALDX is short-term, which I think is a bad idea for bonds you intend to hold long term (note: longer term bonds will
experience some dip in NAV when rates rise, which I expect them to in the next quarter-dozen years or so. However, a combination of maturing bonds and re-investment of dividends should mitigate some of this, and the purpose of bonds in your portfolio isn't really the return they give anyway).
FDAXX is a money market account and isn't worth holding in your 401(k) at your age and risk tolerance.
Each of the large-cap options, despite claiming to not be attempting to do this, has been doing a good job of following the S&P 500 index. If you need large caps in your 401(k) for some reason, pick one.
I'd avoid the international funds in this account; their ERs are high, even for your 401(k). I'm sure Fidelity has a good international fund you can use in your Roth IRA.
I am currently split 25% 4 ways to diversify:
It's far better to determine what you want your asset allocation to be and figure out what you can use to fill that; there was a big overlap in the funds you picked. Is there a particular reason you wanted to have large-caps as only 25% of your allocation and mid-caps at 50%? Either way, diversity is achieved by the underlying assets, not the mutual funds through which you hold those assets.
However I'm thinking of just doing 50% FDXAX index fund and 50% PSSMX index fund.
If you go with this, coupled with your Roth IRA, you end up with 100% stocks, tilted heavily towards mid- and small- caps. Is there a particular reason you want this?