Few questions about my chip

[Josh99]

I bought my chip from a guy who had a 02 crew cab with cold air and exhaust. I have a single cab cold air and intake. my truck shifts funny sometimes. In 80 econ it shifts really hard and chirps tires if I get on it at all. I always keep it in 100 performance. It shifts pretty good but sometimes if I get on it it will lag, then shift real hard and chirp the tires. The power is great but I'm not sure about these hard shifts. Some shifts feel good. I dont want to mess up my trans obviously and I usually let off the throttle to help it shift. I am thinking of a bully dog shift kit+valve body. My truck has a heavy duty torque converter, dont know anything else about it, previous owner had it installed. I think I want to send my chip in soon to get different tunes on it, I am wondering if I can get the tunes adjusted to shift different or what. I have stock, 25 t 40 t 65 t 80 e 100 p and low idle. I want stock, 25 t 65 t 100 p 120 and smoke. How long does it take to ship it in have it changed and shipped back? Also, I will be putting a wicked wheel in my truck, will anything need to be changed on the chip for that?