This team needs to take a QB at 4. Not only for the post Romo era, but because they are gonna be in a good situation for their development. Neither Wentz or Goff are ready to start straight away. I think they both have slightly more flaws/unknowns than Mariota/Winston, but similar upside. Sitting for 2/3 years and learning (with a few games when Romo inevitably spends time on the shelf), then coming in behind the best offensive line in the league gives them the best chance of maximising their potential. A lot of talented QB's fail due to being thrown in the deep end too early and in the wrong situation/system rather than not having the talent.
I like that Goff seems to be getting rated the second best because I think he fits better, having a lot of similarities to Romo, plus he's 2 years younger than Wentz. He puts on 10-15 pounds by the time he's Wentz' age and one of the factors for Wentz being rated higher is gone. If Romo is around 3 more years, he's playing year 4 at 25.
This team needs defense, and we have a deep draft in defensive prospects and lots of picks to use to take some later in round 2 onwards. No point wasting a mid round pick on a QB with backup upside, and we probably aren't going to get a chance to pick high level QB at the top of the draft anytime soon.