What was confusing about current processing times? Those are the best estimate you are going to get.

Fees for various immigration filings are listed here. At present the I-130 has a filing fee of $420, and the I-485 has a filing fee and biometric fee that total $1,070. Obviously, if you hire a lawyer to assist you, the lawyer fees will be in addition to the filing fees.

If you want to work after filing to adjust your status you will need to apply for a work permit (employment authorization / EAD), Form I-765 ($380). If you want to leave the U.S. while your adjustment of status remains pending you will need to apply for advance parole (Form I-131, fees vary).