Morning
Just took a look at my cross member, I would say it is not much of a job. Remove bumper and all other parts to give good access but keep it driveable.
Take pictures and then go to local sheet metal or welding shops, they will love this kind of work, easy to cut out, heavy steel, easy to weld, should take one day or less with many tea/coffee breaks.
I have welded many classic cars in my time and would think this to be a fairly easy job, up on ramps. front of car, not much more to say.
Good luck!