That’s what is supposed to happen. Wheelchairs, then jumpseaters.
Some gate agents will let you go down beforehand, which is nice. But technically that’s not the order outlined in their manual.
Drop your bag outside the entry door, ask to meet the Captain. (Or drag it with you and tuck it in behind you as best you can so people can get past). Then grab your stuff and enjoy a window or aisle seat pretty much anywhere you want that isn’t row one or an exit row. The idea is that you’re early enough in the boarding process that you’ll have no trouble finding overhead space and you won’t get stuck in a middle seat.
Will there be traffic jams sometimes? Yup, it’s a baby Boeing and there isn’t much room in the forward galley, so make the best of it.