Faster Texting on TP2

[ActionPlyr]

Hey everyone,

I sadly still have my TP2 for various reasons and I'm trying to make the best of it.

I pretty much use my phone for the basics: making calls, texting a ridiculous amount, and using the web with the occasional use of the GPS. Is there something that could speed up the texting on my phone? When I get a lot of texts stored in my phone, I have to start deleting them and even that takes forever. When I have a lot of texts stored in my phone, the messaging starts to get really laggy and unbearable so I have to start deleting the 2,000+ messages but that takes about a day to fully delete (I have to turn the backlight on and leave it on just so the phone doesn't go into sleep mode and not want to turn back on again because of the overload.)

I have never flashed my phone to a different ROM, but is there a certain ROM that someone recommends I use that would allow me to have over 2,000 texts in my phone without having to spend an entire day deleting them all? Pretty much a ROM dedicated to texting...

Also, if I go to a Sprint store for a repair, will they still work on it even if it is with a flashed ROM or will I have to re-flash it to the stock Sprint ROM?