ok, but first, do you have to have a sniper?
cause i really dont wont this to become a sniper-fest where everyone and their dog is a sniper
(look in the "questions" topic to see what other types of weapons you could go for)
if your really set on being a sniper you can be... but if your not fussed then... yeah(we already have 1 sniper... 2 wouldn't hurt i guess, but still)
anyway, seen as your weapons are all heat you could make a good Pyro, rather then a sniper..
and are you sure you want your 'buddy' to be dead? most Baragans have very tight bonds, and unless you are some outlaw you wouldn't usually kill your own buddy, if you want him to be a lone baragan then maybe you could make it you didnt kill your brother, but instead he was killed by someone else(or maybe you didnt kill him, but separated, that would work well with the story so far, as the group has already seen 1 lone baragan, you could be his buddy who has separated from him)
anyway, a bounty hunter type seems cool, the cold sealing entry wound... ive head of heat sealing wounds(eg, light saber, everyone knows that as an example), but not ice.. if you choose to be a pyro you could keep that maybe but have it heat not cold
now, one thing with rounded characters, if you are a pyro but still keep your sniper abilities, then you wont be as specialized, as say, a just pyro, or a just sniper
anyway, your abilities seems ok, but you do know that a kaltesian will always be faster then a baragan?(kaltesians are the naturally fast guys, just like guidesmen are the naturally strong guys) even if it is a super fast baragan, a slightly above average kaltesian will be faster.
so, consider what i have suggested and make your choices, besides that everything seems great, good to see a new member, once this is all settled i will slot you into the story