I know this may not be the right place to post this? but I couldnt find a place for bass "gear"

I have a Peavey TNT 115 with the 7 band EQ that is 150W at 4OHMs and 200W at 2 Ohms. (im guessing the combo itself is a 150W rms)

I am having to crank my amp to like 7 with my gain on 5 to be able to play loud enough at shows now.(passive non humbucking pickups)

I wanted to know. Should I just get a 2 ohm 4x12 cab to compliment it so that I get up to 200W and will it also sound better?

since I crank so loud, I get distorted. And I play funk so I cant have that happen.

Or should I just get a new amp?

id say get an ampeg or something possibly a used head and cab depending on your budget.