Ok, this is going to come off sounding pretty harsh, but that's the way it is I guess. Archery, specifically bowhunting, demands dedication. You don't just pick up a bow "because the rut is coming up." Hunting is a matter of life and death, for the animal at least. You owe the animal 100% effort to put it down cleanly, quickly, and ethically. As such, long before the season (or the rut) rolls around, you should have your setup fine-tuned. Getting broadheads (hunting arrow-heads) to fly and hit correctly demands quite a lot of tuning and practice. You should definitely not be just trying it now, with the plan to hunt with it soon.
I personally dislike whisker biscuit arrow rests, but I shoot with a number of guys who use them. They do work just fine. I know people who use them with both feathers and vanes. However, whisker biscuits can be a bit tough on feathers, and they tend to rip the feathers up a bit over time. I would personally go with vanes.
The longer the vanes (or feathers) the greater the stability of the arrow flight, in general. However, the helical fletch determines this as well. In the case of quick-spin vanes, that also stabilizes the arrow flight. I would suggest 3 inch vanes, with a slight helical offset. However, this depends entirely on your setup. There is no way I can give a concrete suggestion without knowing what bow you're shooting, at what poundage, what arrows at what length, and what grain field tips / broadheads you plan on shooting.
You do realize that you need a fletching jig to fletch your arrows right? From the simplicity of your question, I find it hard to believe that you really know a lot about how to fletch arrows. Do you have a Blitzenburger or something comparable? I'd suggest going to a pro shop and getting them to make up your arrows for you, if you aren't certain how. The arrows need to be cut to the right length, and have inserts securely installed.
After all this, I would just like to re-state that it is not fair to the animal to set out with anything less than 100% belief in your ability to make the shot. Putting together new equipment at this point in the season is a recipe for disaster. Keep your shots close, and make sure the animal is calm and unaware.
If anyone ever told you that I give a damn, they damned well told you wrong!
The other day I was eating Starbursts and watching TV, and then a Starburst commercial came on. I was like, damn, that's profound.