Solved

how do i best use push level?

Hello,

The most effective ways of managing you team's Push Levels and boost usually change based on track conditions, your design and where you happen to be in the race. 
For example, Push Level and Boost usage are likely to be vastly different between a Wet Hungary race and a dry Italy race.

That said, there is some information regarding Push Level and Boost usage in Rhys' 2022 iGP Manager guide which I will link below, but it is worth noting that some of the information in the guide may be slightly outdated owing to game updates since the guide was written.

2022 iGP Manager guide - https://igpmanager.com/forum-thread/45862

Hello, 

In yesterday's chaneglog, it was noted that there has been a change to driver height and how it affects ideal setup - "Nerfed ride height impact on setup"*.
How this will actually affect gameplay, only the developers know, but the use of "nerfed" seems to suggest that height is going to have less of an effect on driver setup.

In short, I would say, yes, promote the T30 as having a high talent is crucial, given it cannot be trained. Additionally, drivers from the YDA have lower wages that those from the market so it may help you to save some cash in the long-term.

* https://igpmanager.com/changelog/108