Keep in mind, IMO no reputable shop would do what you are asking, no matter what you are paying. The deal breaker for me is you are only welding three, and that means uneven heating/tempering on a stressed high rational catastrophic non redundant drivetrain part. Only thing that could be worse, is you want to drive it on the street.
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
