What doubles would you be diving in?
I dive AL80 doubles and the shorter tank neck (compared to that of steel tanks). This makes the hose routing that not optimal for DS4 first stages. When I started diving doubles, I was using DS4s. The first stages will need to be slightly tilted in order for all the hoses to be pointing downward. Thus this would require bends on the hoses when routing. With the tight hose routing, it LP inflator hose actually pressed against the upper channel of my double wing which makes venting air underwater a bit more complicated.
I now dive SP MK25s for my backgas and use the DS4s for my stages and deco bottle.
But you are going to be diving in steel doubles, it shouldn't be a problem. Hose routing is actually very nice.
I dive AL80 doubles and the shorter tank neck (compared to that of steel tanks). This makes the hose routing that not optimal for DS4 first stages. When I started diving doubles, I was using DS4s. The first stages will need to be slightly tilted in order for all the hoses to be pointing downward. Thus this would require bends on the hoses when routing. With the tight hose routing, it LP inflator hose actually pressed against the upper channel of my double wing which makes venting air underwater a bit more complicated.
I now dive SP MK25s for my backgas and use the DS4s for my stages and deco bottle.
But you are going to be diving in steel doubles, it shouldn't be a problem. Hose routing is actually very nice.