So you came out first while speeding (what your title says)? Kidding.

Forget all the advices, do what Instagram said. Even better, hire a local lawyer from the country/town that issued the ticket. Search for a traffic violation lawyer from that area. Local lawyers have rapport with judges from that area and it always helps.

You definitely don't want to plead guilty. Even though your license is from Texas, points could still potentially get transferred to your license because of Driver License Compact (DLC) or other arrangements (driver registry). This means extra work, potential suspension if this happens again and increase in insurance cost.

Contact the lawyer asap.