Working backwards from the target
A revenue target is a yearly number, and nobody works a year. You work a week at a time, so the only useful version of the target is the weekly one: the jobs you have to finish and the quotes you have to write to get them.
The first mode starts from your average job price. Divide the target by that price for the jobs a year. Divide again by the weeks you actually work for the jobs a week, then divide by the share of quotes you win for the quotes a week. The second mode goes the other way. If you already know how many jobs a week you can physically run, the only thing left to solve for is what each job has to be worth.
Read the weekly figures as they come out, fractions and all. A result of three point four jobs a week does not mean you do three point four jobs. It means the work does not divide evenly, so some weeks carry four and the year only balances if the busy weeks are not the ones you cancel.
The mistake to avoid is using fifty-two weeks. Take off holidays, the slow season and the weeks you spend quoting instead of working, or every weekly number here comes out too small and the year quietly runs short. The other one is guessing the average job price. Zeus keeps every quote and invoice on its own job record, so that average is something you read off your own history rather than something you feel.