I assume that the skid plate you are referring to is the reinforcing plate (part #3 in the Realoem diagram below)?
If that is the case, then be aware that the bolts (part #4) are part # 33306772888 (M10x35-10.9), and appear to single use TTY bolts. I think 45 ft-lbs plus 90 degrees, but I am not certain. Hopefully, someone has access to a manual and can chime in.
There seem to be a number of threads about the value and/or necessity of TTY bolts, but
this link refers directly to the stiffener plate on the e53 X5. See post #12 for a good tensile strength-strain diagram. On a more practical note, see posts # 20 and 21 for reports of creaking front suspensions that started after re-using the bolts, and were fixed by replacing with new TTY bolts. Of course, there are lots of opinions about this - many other posters have said they re-used the bolts without problems. But it's always good to at least know about the issue.
Otherwise, good job with the repair. Gotta love a DIY with pics!
Regards.