Hopefully you would make some time for me and
Hopefully you will make some time for me are grammatical, but they mean different things. The first is conditional on something else occurring before you making time for me even becomes an issue - "If I were to come to your city in February, hopefully you would make some time for me." The second assumes that you and I will definitely be in the same place at the same time, so the only question is whether you're too busy or not - "When I come for the interview tomorrow morning, hopefully you will make some time for me."
That said, I think what you might actually want to say is "Hopefully you could make some time for me", or even better, "Hopefully you will be able to make some time for me." This is because both the will and would constructions are asking about willingness, not ability - "Hopefully you will condescend to make some time for me" - which is not the sort of thing you'd routinely ask someone.
(For your other question, try "I just wrote the following sentence, and once again, I was unsure whether I should have used...".)