"to first discuss" is a perfectly correct and usable phrase in written English.
You can use the phrase when you want to indicate that something should be discussed before any other topics, or that the first topic of conversation should be the one that follows. For example, "Let's start by to first discuss the budget for the upcoming project."
But pressed as to whether she would support a budget freeze, she added: "I beg leave to first discuss this with the prime minister.
If you do think you are being treated less favourably because you are employed for fewer hours, it is wise to first discuss the issue with your line manager or someone in HR.
In fact, providing an attendant was one of the main sticking points in the negotiations among the collection of business groups and transit officials that met to first discuss the idea.
Lew's warnings came as House Republicans showed signs of bowing to pressure from donors and business supporters to back down from their threat to withhold a debt limit authorisation unless the White House agreed to first discuss spending reductions.
Mr. Kok's cabinet, which itself resigned last month after a report that criticized the behavior of the Dutch government during the 1995 massacre of Bosnian Muslims at Srebrenica, debated for almost two hours whether to postpone the elections before Mr. Kok decided to first discuss the issue with the leaders of the slain politician's party, List Pim Fortuyn.
"We are not going to issue a press release immediately because we want to first discuss with Qatar the decision that we make".
But rather than hand the medals straight over to the athletes, UK Athletics will first discuss what to do with them at a board meeting this month.
To analyze this, we first discuss how the motion of the eight beams is transduced to the measured intensity.
Before obtaining the best system load, we first discuss how to find the local best solution.
This paper first discuss how to improve walking velocity and energy efficiency.
To motivate this approach, we first discuss some measurement results obtained in a car environment.
