Impeller upgrade advise needed

2017 GTX 155 with 18 hours. sucked up a rock and looking to replace with upgraded impeller. I prefer Low end power and acceleration over top end speed. Current max speed was 59-60mph. I dont know what the stock pitch is but I keep hearing about 11/19 pitch. I see charts that say 10/18 and 12/20 also. and then the 3 blade Skat traks… which one will give me the most low end performance without losing top speed. I am willing to go for engine mods like ECU reflash to go with an extra step in the impeller pitch if the overall gain in performance is worth it. Please advise me on the best course of action. and Thank you in advance.

Closing as it was replied to in our impeller selection thread