What is your plan for the car, daily driver, weekend toy? I see you're running the td04 still and any turbo larger isn't going to spool quite the same. An 18G should spool about the same as a VF39/43 depending on the tune and EBCS (I didn't see one in your mod list), a 20G might spool a bit later, then you have the DOM1.5XTR good for your 360ish+ goals (20g power with 18g spool). Don't forget EWG can recover about 150-300rpm of spool when tuned for properly, and you have AVCS which helps too.
On my stroker ej205 (2.0l -> 2.17l) I was told a 1.5DOM would put me around 350whp on a conservative tune (18-20PSI) and full boost would come on around 4k RPMs which should mean on a 2.5l you should make at least that. I also noticed you're pushing that TD04 hard at 21PSI, now I get E85 means more boost/timing but that's working the little turbo ragged over time and I wouldn't beat on it (they're set at 14.5PSI from Subaru for reliability and 18+ has been known to wear them out early with extended usage at those higher levels of boost).
In the end when you choose your turbo, you need to keep in mind the usage/goals of the setup. A DD might not be as fun to you if you have to wait until 4k+ RPMs to hit full boost (6 speeds run out of gear faster with more power), say vs a weekend toy where you can stay in the upper RPMs and utilize that powerband. Also something many people forget/don't realize is when you have a daily, making peak TQ above 4k RPMs is not going to have that push you in the seat unless you run through every gear (and we all know how short the 6MT 1st gear is).
And never forget to ASK YOUR TUNER!