Sounds about right except for the 13* part..Timing is 10* unless you specify in the tune..Even 3 advanced changes the timing events between Injector and valve..
When I want to advance /retard my timing on the fly I use one of these...They sell units that work with and without MSD ignitions....
Open headers isnt too good and will make your engine run rich..............
The faster the 02's heat up the faster the engine cleans up and running an engine even in short bursts isnt good as you need to put a proper load on the rings asap to properly seat them plus running rich just gaswashes away the protective oil...
Even with flattappet hydraulic and solid camshafts I drive them straight away as the 2000 rpms sitting still is only a myth..
What kills flattapppet and hydraulic camshafts is the improper use of the thick assembly lube then allowing it to sit in engines too long not allowing the lifters to properly spin......For roller camshafts it stops the roller wheel from spinning right
I know you have a factory roller thats why driving the vehicle straight away and keeping it under 1/2 throttle varying engine speeds is very important at getting maximum ring seal...
Adding a wideband 02 controller to the EGR port wire #27 on the EEC plug helps out alot too
My Melling HV HP pump in my 410runs at 70-75 psi cold..In my 351w with regular oilpump it goes to 60psi cold