The XDeep sidemount wings only works on the harness it comes with.
You just need a separate rigs. But the backmount rig doesn't need to be elaborate. Something like this can be had for about $400 with a set of weight pouches. You already have the regs for BM.
A basic DGX backplate/wing/harness package for single tank diving at a value price.
www.divegearexpress.com
I was transmitters from the get go when I started sidemount, I would just switched one of my transmitters between my sidemount reg and my backmount reg. It only takes a couple of minutes. Though I did keep a SPG on my backmount reg.
Actually the X deep wings will work on more than just the harness they come with. I've built several harnesses using X Deep wings as the base. Both the Classic and Tec wings. Piranha Dive Mfg has all the hardware necessary to construct a harness from the ground up. As does Sump UK. Randy at Piranha is easier though if you live in the US.
Sidemount Harness Plates! Complete set of upper & lower plates! , Piranha Dive Shop |
That said, building a harness is not advised for someone with no experience in sidemount. Even those with sidemount experience may find it challenging. Including a number of "sidemount instructors" who only have experience with one rig.
You do need a dedicated set of regs. Turrets are pretty much a must for clean hose routing. Ones that will swivel 360 degrees with hoses on them. I use HOG D3's and have been since 2013. D1's before that but they didn't swivel 360 and were not optimal.
You'll also need either cam bands or 8 inch ss hose clamps with large bolt snaps, paracord, and depending on the style you go with, leashes for the top that stay on or removable ones if diving like they do in Mexico where top leashes are not left on the neck of the cylinder and clipped off.
Hose lengths would be a 7ft for the right cylinder and 26-32 for the left. The left depends on how big you are and where they cylinder is hanging. I'm 5'7" and about 165lbs. I use a 28 inch hose with a 110 degree elbow because I do a lot of sidemount in a drysuit and need that length for full range of motion.
I also don't use transmitters, 1.5 or 2 inch spgs on 6 inch hoses when diving them lollipopped or 9 inch when diving them with the spgs running down along the cylinders. The latter not very often because I have my rig configured so that the lollipopped spgs don't droop and don't pose a drag or snag issue in wrecks.
And carrying a DSLR camera rig means I can just glance down and see what my pressure is.
Not using AI is not so much as not trusting them as it's two more batteries to worry about and another 6-800 bucks for transmitters that could be spent better elsewhere.
You'll also need to be prepared to have whatever set up you buy completely reconfigured by a competent instructor. With no SM experience, you'll likely have a couple things just plain set up wrong. A good instructor will work with you and basically build the rig around you.
The X deep is a nice set up because it allows this. Some other rigs out there need extensive modifications to be useable and some should just be thrown in the trash.