$124*64 hours (breaking guarantee is rare, esp. if junior) plus whatever per diem if you want to brown bag it Deadheading pays half towards guarantee) extra money if you work your override days, more extra money if you work your days off. Can sell yourself out of business class if you want to but I wouldn't recommend it. That's about it for money. Overtime is hit or miss.
Upgrade is essentially instant if you meet the mins, since we are hiring street CAs. First class starts around now I think. According to the powers that be, "almost all" street CAs are previous wide-body CAs.
I haven't seen a whole lot of attrition, a few retirements, a few picked up at "dream job"s.