Do you have any idea what kind of cow she's out of?
You've already got Heat Seeker, Who Made Who, and Full Throtle blood in her. All are great, but all have potential for some structural issues. I would not use bulls from those bloodlines.
If you want purebred (or at least high%) Maine on her with good chance for a steer, I like the Habanero line (including Lifeline). In fact, I'd probably use Habanero himself. Others - Power Plus throws some good steers as does some of the Irish Whiskey sons (especially Paddy O-Malley). If you go Power Plus or Whiskey, I'd suggest going ahead and getting her PHA/TH tested to make sure you don't have a PHA issue from the cow side.
I'd think about trying a purebred Charolais bull on her if you want a steer. Schroeders have some, Kris Black does (Hoo Doo Prince and a new bull called George), plus there's lots of others. Less chance of a problem.
I haven't used the bull myself, but from what I know of Money Man I don't think he's a Texas steer bull. Would probably be great if you wanted a heifer.