Hey Zach thats a great career your going for man, I too am also very interested in becoming a forensic entomologist. Forensic Entomology is not a full-time job and as such very few work full time as a forensic entomologist, most are affiliated with colleges and work as professors/consultants for the police.
The wages vary but can be between $40k - 140K and possibly more depending on how many cases you handle a year.
Check out www.forensicentomologist.org to see the requirements to become board certified because if you do your pay will increase significantly and also the amount of cases you work as well