I would like to remove ceiling joists in my gym building because they are too low for me to safely do overhead exercises. I would like to incorporate a ridge beam to support the roof so I can eliminate the ceiling joists safely and effectively. There is no ridge board in place, the rafters are simply nailed together. A little bit of separation has already occurred at the top. Any advice on if this is feasible and how to go about doing this project? I am attaching photos of the ceiling joists themselves, the interior peak of the roof (showing the minor separation), and the structural walls where I would be mounting the planned ridge beam.
https://postimg.cc/gallery/rDc370n
EDIT: Ignore the single attached photo. All the images are in an album at the postimg link I posted. I tried to delete the attached image but not seeing an option for this, at least on mobile.