Some applicants with a valid METV have been told to wait until it expires before processing of the DTV can begin. It makes sense. Why don't you use up that METV first? DTV isn't going away.
Question to the people saying "renew now": does your country allow you to renew when there's more than 1 year of validity left? Mine doesn't, unless all pages are already full.
The digital statement should be OK, since you have to upload it online. However, if you can get a physical statement, do so, since many Pakistanis have been called in for interviews. In summary, get both.