Hello! Congratulations on such a beautiful fleece!
How you process it depends a lot of what you like! Personally I like a fair bit on lanolin in my fiber, so for anything that is not out right sticky with lanolin I do a cold wash process
However! Many folks do not like this! To find out try washing a small section in a cold method and the other in a hot scouring and spin them up. Or for some people even just feeling the washed fiber will tell them a lot, especially if they hate the lanolin feeling.
Here is are a few videos of processing with a hot scouring method
And here is a video of someone processing BFL post washing.
How you want to prep the washed fiber is completely up to your preferred spinning methods/what tools you have available.
A lot of carding can be done with inexpensive dog brushes and you can always just open up the locks and spin like from the lock. Personally I find long stable length fiber tricky on carders but that might just be me!
Each preparation method will want to spin in its own way!
I would definitely not stress about finding the perfect method, but rather experiment. Maybe Pull off a section and try a few different prep methods? When I am processing a new fleece type I normally do that and do a handful of test spins to see which is like best. Nothing is more disappointing that putting dozens of hours in the prep that it turns out you hate to spin!
Personally for BFL I like a combed prep, but spinning from a well cut lock can be quite similar as the fibers are all aligned still. Combs are wonderful but if you cant find them used they are quite pricey.