1 The (I must say that I found this sentence a bit flowery for my taste)
2 Either, but I'd remove the comma.
3 I would use have been, but don't object to be.
I used OneLook, which searches hundreds of online dictionaries and it doesn't appear in many, so maybe keep the inverted commas:
Definitions of workaround - OneLook Dictionary Search
Compare with work and see how many dictionaries have that- most of the big names are missing in the first search
Definitions of work - OneLook Dictionary Search
4 Hard to say- conceivably is stronger, so it depends on how far you went. As it's law school, I might stick to the more conservative possibly.
5 Both might suggest a greater focus on these exclusively
Good luck with your application.