The solution you proposed won't work out, because one end of the axle assembly (aka "bottom bracket") is left-hand thread and so it won't go in the other direction. You'll need to pick up a new bottom bracket unit to correct the problem.
It looks like the AceraX crank is meant to use a bottom bracket with a spindle length of about 110-113mm. The width of your frame's bottom-bracket shell (the sideways cylindrical part of the frame that the bottom bracket is in) will also be important, the most common widths being 68mm and 73mm, so take note of that measurement too. Or rely on your local shop to set you up with the right unit. You'll need a special tool to install the BB if you're doing the work yourself.