i actually just started doing this, i am left handed and i used to fight with an orthodox stance, i now switched to southpaw, at first it feels a bit awkward but i got used to it. my speed, timing and balance is better and now that i can fight both ways its easier to confuse ur opponent, i can switch my stance and style in the middle of a punching combo. i don't box anymore but its good to change it up every now and then, when i used my orthodox fighting stance in boxing i always seemed to be a bit off with my timing and balance. try to get used to fighting both ways, u might like the southpaw stance better, i'd say try it out, it worked for me!