Really hard to beat for longevity... this has been my four-fund IRA anchor for years... I never 'get tired' of it.

... but for a little more stability, you may want to get half or so into TRP Cap Appreciation (PRWCX)... Funds are not bullet proof, but PRWCX is about as close as you can get to bullet proof. If TRMCX ever gives you the "swing-fits" consider heading to PRWCX and / or PRSIX