I think Vince is gonna get more out of this than Trump will, with increased ratings, WWE being mentioned on the news channels, etc.
Here's my plan:
Trump takes over Raw, announces Steph as new GM. Insists on having a 'hands-on' role as owner of Raw, and starts having an affair with Steph. HHH finds out, and challenges Trump to a 'Last Man Standing' match at Summerslam. Trump hires Macho Man, who has experience with adulterous women, to be his special enforcer at the match. HHH wins at Summerslam after Vince interferes, knocks out Savage and slaps some sense into Steph.
Two weeks later, WWE releases the 'Trump Love Triangle DVD'.