Adding a second board. Need some advice

Hi, I'm new to the forum, have a question for all you more experienced surfers.
I've been riding a 9ft longboard a bit more than a year now in mostly 3-6 foot surf, am consistently up on waves, on the face and turning, albeit slowly. A few spots out here in San Francisco can get pretty big and steep especially in the winter, and on big days, the board is pretty rocker-less, leading to pearling if I don't get up almost immediately or have a pretty good angle on takeoff. It also feels like a bus trying to turn.
I'm interested in adding a second board especially for the bigger days to help progress on turning and also to pull off steeper and later takeoffs. A bit wary though of struggling on too short a board in my preciously-little free time, but at the same time want something that will feel substantially different than what I already have.
I'm 6 ft, 185 lbs (83kg), 33 years old, and a strong paddler (at least for the first hour).
Question: I've been looking at boards as wide-ranging as a 7s 7'3' Superfish XL (fish-shape, almost 3 inches thick) vs. something more longboard shaped just shorter with more rocker, like a minimal vs. funboard. Would appreciate your suggestions and experience in transitioning down. Recommendations on suggestiongs for specs would be great.
Thanks!
I've been riding a 9ft longboard a bit more than a year now in mostly 3-6 foot surf, am consistently up on waves, on the face and turning, albeit slowly. A few spots out here in San Francisco can get pretty big and steep especially in the winter, and on big days, the board is pretty rocker-less, leading to pearling if I don't get up almost immediately or have a pretty good angle on takeoff. It also feels like a bus trying to turn.
I'm interested in adding a second board especially for the bigger days to help progress on turning and also to pull off steeper and later takeoffs. A bit wary though of struggling on too short a board in my preciously-little free time, but at the same time want something that will feel substantially different than what I already have.
I'm 6 ft, 185 lbs (83kg), 33 years old, and a strong paddler (at least for the first hour).
Question: I've been looking at boards as wide-ranging as a 7s 7'3' Superfish XL (fish-shape, almost 3 inches thick) vs. something more longboard shaped just shorter with more rocker, like a minimal vs. funboard. Would appreciate your suggestions and experience in transitioning down. Recommendations on suggestiongs for specs would be great.
Thanks!