1) Depends on your pax, minimum should be $150
2) Promotion depends on your performance. So how long really depend on your skills. Most staff struck at Pax 4.
3) Criteria also goes back to Point no. 2 No hard and fast rule.

Just my 2 cents suggestion - Don't bother to aim for high pay as a lecturer. But the pay here should be ok for you to survive in Spore. So you have to weight the pros and cons. Work life balance or good money.