F/O to CAPT
If you jojn QR as F/O today ( hours do not make difference) you will be F/O N 445 so there is 445 F/Os to be promoted before you and all will have hours in 3 y .You will have to wait for aprox 10 y becouse QR is promoting at the moment 3 f/o in 30 days and it will increase INSALAH to 4 in 30 days in future so you can count !
If you want money jojn but if you want 4 strips on shoulder run into Etihad or Jazzera or Arabia or any small EU airline .
Good luck