You have jackpot career there. If you miss short flights and landings, rent or buy your own cessna and fly it in your free time. 8-9 years to command on WB is almost impossible in any legacy if you start short haul. Not to mention to change companies to be able to upgrade. Being LH captain in early 40's will give you plenty of time to spend with your future family if you plan any or for your middle age crisis activities, something you probably will not have enough in any SH operations.