Choosing the best 5.7 engine and Transmission

Oh trust me I would love a 392! We are unfortunately talking way different budgets at that point...
Sounds like I may need to do a little more research on the Nag1 and 545 to be sure. But like you said I'll be patiently looking for deals. What deal comes up may help me make a better decision between the transmissions since neither sounds like a bad option.