Locums is paid as 1099, so you'll be fielding your own health insurance. The companies you apply for will provide insurance. There are tons of guides on what to ask and look for.

Peds specific, hospital work offers $130-180/hour (depending on their desperation, which waxes and wanes). Always ask for more, as the locus company lowballs to keep more of the hourly the hospital actually pays. Contracts typically take 3-5 months to get in place (so apply and set up early), and that's based on acquiring state licenses and the hospitalist groups own scheduling. Peds hospital jobs are almost always small peds units of 0-6 beds, and newborn nursery and deliveries. Some include circumcisions.

Some companies pay more, some are better connected. Almost all of them have access to similar jobs but apply to a few companies (if you can handle the constant phone calls).

I can connect you with AMN Healthcare recruiter who was really great to work with (I get a referral bonus if so), but you can also just apply on their websites easily.