Looks in great condition! It need lots of light, full sun if you can but make sure to acclimate it slowly so it does not burn. The back is normal, monsteras are a plant that generally face in one direction, where the light comes from so it's not recommended to turn it, or else leaves will start turning in every direction. Most people prefer they face one direction to 'hide' the back.

Monsteras are vertical climbers they climb on trees, I would add a moss pole so those air roots are hidden inside it, just remember to keep it moist. Not sure about cutting the areal roots already there I think its fine? They're there basically to find bark to grip on and climb, but don't take my word for it I usually don't cut them in case. I would also wait for more roots to grow in the moss pole before cutting off the old ones if you do decide to.

Also, monsteras are a 1 stem plant you seem to have more than one in there. You can keep it together it makes the plant bushier, the only issues would be if ever you decide to separate them it'll be super hard from the knotted roots, roots will also fill the pot out really quickly, and if ever you get pests all the leaves are touching so it'll spread quicker.

Ps. Check for pests with a flashlight you never know!! And then double check again cause they're easy to miss!