I agree with R.OCKAPE. I'm currently in Long Beach and I've seen most schools in the Los Angeles area. LA Helicopters is of the pilot factory type. I have to admit they run a well respected, tight operation with good customer service. But with numerous pilots on the long line course together, will you receive the attention you want? The visa actually comes out at $1300 when you include all the bolleaux administration. Also at $625 per hour for training in an R44, is it worth it? How many operators use an R44 for longlining? How far is the practice area from Long Beach airport? Who pays for the ferrying?
I've heard good things about Western Helicopters. As for my recommendation; I did an hour of longlining at San Joaquin Helicopters with Jim Arbaugh. He is an active fire fighting pilot. He flys pretty much anything - currently on the 212 and 214. He self taught himself years back on the B47's.
I don't believe the implication that a 300hr pilot would be teaching the course at Bristow's is factual. In fact my instructor did the course at Bristow's and implied the instructor was quite experienced. This would have taken place at the end of last year.
Anyway, just some questions for you to think about. Good luck finding yourself a course.