It is not called the DutchPirc and you did NOT invent it.
It has been known for ages, and I even played it one time back in the early 2000s against an 1800 player over the board who was clueless against odd openings.
It is called the Balogh Countergambit. 3.Nc3 Nf6 is the main line. Taking on f5 or advancing is inferior (my opponent took on f5 and I won).
Theoretically, 3.Nc3 Nf6 is good for White.
This can also be played as a way to decline the Staunton Gambit in the Dutch Defense (1.d4 f5 2.e4?! d6?), though 2...fxe4 is by far stronger.
I call this the DutchPirc Attack since 1) I invented it, and 2) it's a cross between the Dutch and the Pirc.
3 main variations in my opinion. 1) The Normal Variation, Main line
2) Advanced Variation, Main Line
3) Exchange Variation, Main Line