If the "Shooter Buck" is anything like the one I bought at the local Fleet Farm a few years ago for about $80, I'd tell you to stop right there and save the extra money for a Rinehart target.
The foam is cheap, legs are plastic, and it's a little smaller than the Delta buck (with worse foam). Fine for field tips, but anything with a blade on it will cut it up in no time flat. No way I'd leave any of my foam targets out in the elements, but especially not that Shooterbuck.
I've had my Rinehart 18:1 for over 6 years and I've still failed to kill it with broadhead - including a few years with wheel bows before I got into trad. Best target I ever bought.
Save the money, get the Rinehart. I wish I had.