So is there anyone here that has access to a mining pool's transaction selector?
this is in the wrong section, you want the Technical subforum. But to answer your question, you want to use one of these services:
https://pool.viabtc.com/tools/txaccelerator/https://pushtx.btc.com/these are likely to be fully que'd up, so you may want to look for some of the guys on the board that offer this as a service. some guys are generous on the Tech sub, they will accelerate it for you for free, as a community service.
If you manually set this fee, remember to check the state of the network before you use a preset fee. If this came from an exchange, yell at them for not having proper dynamic fees, and stop using them
You are welcome