Wondering if my 401k decision is acceptable.

I have been investing in a Roth IRA as my first two jobs didn't have retirement plans. My current job has a 401K with John Hancock with a target date fund of 2060 (when I'll be 65). It's RFUTX 0.39 expense ratio. I decided to move my allocation to: VFIAX - 50% VIMAX - 15% VSMAX - 10% VTIAX - 20% VIGAX- 5% Total expense ratio weighted would be 0.047. Just wondering if this is a good idea overall or is the target date a better option ?