Getting bass from that type of system is a challenge. Basically, if you widen the baffle enough to get good bass, you impair the "airy" reflection from the wall behind the speaker, which is why you go open-baffle to begin with.
So, you'll have to do experiments in your room to get the "happy compromise".
I'm sure that there are some aspects of the sound that will be very satisfying in OB configuration. If you can reach an overall compromise that satisfies your listening tastes, you have succeeded.
I'd suggest making a simple baffle board, mounting the drivers, and adding temporary extensions to the baffle board in increments, to see how big you'll need it for the sound you want to achieve. Then you can make some permanent baffles. Using a slightly rearward-curved baffle can reduce edge-diffaction effects which could affect imaging. I'd expect you'll need at least a 3' square baffle surface to achieve decent bass response. Baffle-step losses will begin to occur at the frequency corresponding the 1/4 wavelength of the smallest cross-sectional dimension of your baffle. Distance from the wall behind will be important also, as in any bipolar speaker. Cancellation can occur if not properly placed.
So, you'll have to do experiments in your room to get the "happy compromise".
I'm sure that there are some aspects of the sound that will be very satisfying in OB configuration. If you can reach an overall compromise that satisfies your listening tastes, you have succeeded.
I'd suggest making a simple baffle board, mounting the drivers, and adding temporary extensions to the baffle board in increments, to see how big you'll need it for the sound you want to achieve. Then you can make some permanent baffles. Using a slightly rearward-curved baffle can reduce edge-diffaction effects which could affect imaging. I'd expect you'll need at least a 3' square baffle surface to achieve decent bass response. Baffle-step losses will begin to occur at the frequency corresponding the 1/4 wavelength of the smallest cross-sectional dimension of your baffle. Distance from the wall behind will be important also, as in any bipolar speaker. Cancellation can occur if not properly placed.