Ok. I see the 60 in Magnum mid handle on his website and that's what you have and it is able to use four bands? Also do I have to tell him to add a reel and is it removable?
Its a bit confusing, but the Magnum and Super Magnum are different guns. The 60" Magnum is listed under Magnum ordering options, while the 60" Super Magnum is listed under Blue Water.
The Magnums have a three band muzzle and a 1" carbon fiber tube, while the Super Magnums have a four band muzzle and a 1.25" carbon fiber tube to handle the extra force of the four bands. The Super Magnums also have much more massive wood stocks and more lead ballast to control the recoil from four bands. Look at my photo with my 57.5" Magnum next to the 60" Super Magnum and the difference is apparent. Also, check that night photo of me behind the boat holding the Super Magnum. You can see that its a pretty beefy gun.
You can tell him to add a reel, and its easily removable. He installs stainless steel inserts so that the reel is attached with machine screws rather than wood screws. I used to use reels but have now gone almost exclusively to breakaway float lines, but you can see the reel still attached to my 50" GR. I use a floatline because I'm using the gun for the same fish I try to shoot with the larger guns, but when the vis is poor. But I left the reel on to add more ballast and to make it easy to switch to a flopper shaft for hunting calico bass and halibut.
BTW, one of my dive buddies uses a 50" GR no matter what the visibility, and he shoots more big fish than any of us. Below are a couple of examples.
Regarding engraving- just tell him what you want. If its unusual, maybe he'll ask you to send a pattern.
I should mention that ordering a gun from Daryl is not like buying a Riffe or other widely distributed brand. As he puts it, he is the only elf in the woodshop, and he makes every gun by himself after his day job as a dentist. After you narrow down your choices so that you can have an informed conversation, the thing to do is call him up and discuss it (please observe the time difference from Georgia to Hawaii). He'll talk to you as long as necessary to make sure you get the gun that is best for your needs, and he has customers all over the world so that he can tell you what works for the kind of diving that you do.
You may have noticed that he also makes all-wood guns. I've owned the Mahi and the Ono, but I ended up selling them after hybrids became available in the same size range with the same bands and range. I just like the easier swinging of the hybrids, but its all a matter of personal preference. Some people like the wood guns better.