Do it
The longneck branch tailpiece is a direct connect. Brass. 20-gauge.
Nibco Coupling without Stop C x C - Wrot
Copper Crimp Ring, .75-In. 25-Pk.
Copper Crimp Ring, .5-In. 25-Pk.
Pex Stubout Elbow, .5-In.
Condensate Pipe Connector, 1-In.