Taxidermy Rugging

[TinaWickeraad]

I've been scouring this site for information on industrial sewing machines.  I'm looking for a machine to do rugging for taxidermy.  It needs to go through 2-6 layers of 11-18oz felt and the hide (bear, coyote, etc).  I have previously used industrial sewing machines for garments, so these heavy duty machines are new to me.  From what I've read on this site I'd like to try find a Consew 206RB-5 (or any subclass with reverse) or a Cowboy machine, maybe the 3200.  I'm open to other machines that have a reverse and large capacitity bobbin.  Before I make the plunge can anyone give me some feed back on what walking foot machine would be good for me or should I be looking for something with a rolling foot?  Should I find something to sew up to 1/2" thickness or is that overkill?