It works! Note, the fingerboard goes in front of the roof section so there's room to move about a bit and do knee raises and bunched up front lever type things (not a real front lever but a good start). When I rebuild it I'll add another 'main beam' about 3 feet in front of the current one so I can work on proper front levers whilst having a 40' panel instead of the 25' one (it ain't steep enough).

Looks good. How high is the board and what angles did you go for?

The angles are 40' for the left hand panel, and 25' for the right hand panel (topped by a small horizontal roof at the top - behind the dangleboard). As mentioned in my first comment, I've found that the 25' panel isn't actually steep enough so, having just dismantled it all to move house, the whole lot'll get rebuilt as a 40' panel.
The ceiling of the garage is a smidge under 8ft high and as you can see, the 'main beam' is a touch lower than that. The garage has a coach house above so I wasn't keen on fixing into the ceiling, hence the freestanding design. The main thing that determined the height of the wall is that the studs used for the 40' panel are 8ft long and, with the bottom end cut at a 40' angle, and that's how high they ended up (the wall is a little over 7ft high in total).

Thanks very much for such a great reply. I'm house hunting at the minute and finding a decent space for a training facility is one of the main criteria. 8 foot looks just about enough. Cheers.