Point-buy or rolling is fine. I can't think of any reason to bar certain cybernetics, so unless you give me a reason to bar them, pick away. 
Just remember that although this is a game with mechanics, the narrative takes precedence to the mechanics. So, while you could make an "optimal" character, having some shortcomings and flaws can be quite fun and interesting. 

Because you are Elysians, there is some restrictions for character specs. Ogryns, for example, would be a no go, as they wouldn't exactly be loaded into dropships and pushed out.