The biggest problem ... and assumption you are working w/ TR is that your 3 steps is salvation doctrine .... and so you point to various instances where commandments are followed [baptism] and manifestations of God's Spirit [tongues, prophesying] as salvation doctrine being implemented ....
when from the PCI view ... being saved by grace through faith in the work of the Lamb is SALVATION DOCTRINE .... PLACING FAITH ON JESUS ...
TO US IS SALVATION DOCTRINE ...
as long as we disagree on this ... then you looking at Acts as the "best" evidence of salvation doctrine becomes a point of contention ... when we see the epistles as the apostles and church leaders of the time reminding saints how they were saved and expounding on their faith in Jesus Christ.
Your verbosity and attempts to nitpick every argument disguises your fallacious premise to the casual reader ... but is evident just the same to anyone who reads inferentially.
Sloppy is subjective ... but I submit your inability to harmonize
Acts 2:38 w/ God's Plan for Salvation - Jesus Christ- is as sloppy as it gets.