Whatever you do make sure it is setup and timed correctly, that is the most common error I see on Mathews, and it is so simple I just don't understand why I see, and have to correct, so many out of time from these dealers.
Rest: I am very partial to the Ripcord Code Red...it is easy to install, tune and it has a great track record.
Grip: I shoot better with the Focus grip due to the size of my hand�I have a tendency to torque the fat walnut Mathews grips. Do you change or not, depends on the size of your hand and do you torque with that big grip or not.
Stabilizer: I use a $20 4.5" Limbsaver S-coil on my Reezen and my brother has the same thing on his Z7�there is no need in a longer stabilizer than that, as Mathews are already top heavy and there is no sense in adding to that, and as much vibration and noise dampening as Mathews already as you are not going to achieve much more dampening than what is already there�truth be known, mine is on there to anchor my bow sling.
Sight: Personal preference...I like Extreme Raptor 4-pin sights, but Black Gold makes a good sight as well.
Arrows: Admittedly, I am partial to Easton because they are reasonably priced, hit like hammers and offer the widest range of spine deflections. The problem with Gold Tip is they have very limited offerings for stiffer spines. Your ideal spine is going to be around .3100-.3200 and Easton will be your best bet. The Gold Tip offerings are the lighter weight arrows. I would use the Easton Carbon Aftermath 300, if it was my setup.
Broadheads: Personal preference, but there is not a single mechanical I will recommend to anyone, because off the loss of energy and the risk of failure because of moving parts. These are the broadheads I recommend: G5 Striker, Slick Tricks, Muzzy MX-4 or MX-3 and Magnus.