When you get widely varying quotes, I think you worry about either paying way too much or getting a substandard job.
Then, let the deer buffet begin! (God, I hope I'm wrong)
The spicebush should be fine. We have tons of them and tons of deer and the latter never bother the former.
I think the Norway Spruce should come through it pretty good as well.
P.S. This is a good time of the year when deer have many other alternatives to eating seedlings. You may not lose many until the tail end of next Winter.