Sounds like you want a Lightweight Commander in 9mm.
It weighs about as much as a Glock 19 and is single stack. The 9mm version carries 9+1 with flush-fit mags. Grip-size and manual of arms will be the same as your Wilson and the reduced recoil of the 9mm will make up for the increased recoil from the lighter weight.
It weighs about as much as a Glock 19 and is single stack. The 9mm version carries 9+1 with flush-fit mags. Grip-size and manual of arms will be the same as your Wilson and the reduced recoil of the 9mm will make up for the increased recoil from the lighter weight.