Talking with the architect now....not a friendly dude at all.
Few questions after looking at your plans.
1) I would like to use Simpson ABA66 Post base in place of CB66.
Any Base plate will work
2) Column to Deck Detail
Where is the load of each column being distributed to? How are these posts being attached to the structure of the deck? How are they being attached to the porch roof (uplift protection)? They aren't just being placed on top of the decking are they? Further, are the columns you show something inline with a Permacast column or are they ment to be a 4x4 wrapped in 1x trim?
Decking is usually installed after the structure has been erected, therefore the columns are set on the specified 3 X 10 girder and the Double Joists at each end of the Porch. So, the decking must be cut around the columns.
The Columns can be any structural entity the owner agrees with...4X4. .6X6. Wrapped or prefinished column.
Uplift is not a concern because the entire structure weighs enough to keep it down without any hold down hardware. We live in an area of wind shear (side winds)..Not uplift as per Tornadoes.( it is being attached to the house structure)
Architects*design the structural members and what the structure should look like.
Architects do not provide the means and methods of how to build the structure.
That is the job of the Builder.
