390 Build Questions and performance

[HRTATK1]

Hello All,
I am new to this forum, but looks like there is a wealth of knowledge available for the taking.
I was wondering if anyone knows the pros and cons to blocking the exhaust crossover on an FE intake. I am going to be running an Edelbrock streetmaster 390 intake.
I have also followed some of the other threads and was wondering if anyone can give me some advice on my particular engine build. I currently have a 390 bored .060 over for ~401.2 cid. I rebuilt this about 15 years ago and can't remember all the particulars. I believe it was a sealed power kit that I used. I know the crank has been turned .010/.010 and I installed a slightly more aggressive than stock hydraulic flat tappet cam. I had new wrist pins installed. This engine is being used in a 1967 Ford Fairlane 500 with C6 Trans and 3.25 rear gears @ ~3400 lbs. I have been accumulating parts to rebuild for more performance and drivability. I currently have new Edelbrock 60069 heads that I plan on port matching with the streetmaster 390 intake. I purchased a set of Erson Roller rockers 1.76 ratio, edelbrock al water pump, FAST XFI fuel injection system with FAST dual sync dist, WILSON 4150 throttle body ~1136 CFM, MSD 6A ignition and aeromotive A1000 pump. I am going to weld injector bungs in the streetmaster intake and use 36# Bosch injectors. First of all I would like to know if the experts here think I can safely get 450 to 500 HP from this combination using stock rods crank and pistons since I am not using any kind of power adder. What CAM recommendations do you recommend with this combination with fuel injection to have a good drivable street motor that will idle? I don't believe the block as been decked. As far as the SCR, here is the info I have so far. Items with question marks are guesstimates. If any of you know more accurate numbers please let me know. I believe the sealed power pistons had valve reliefs cut but I don’t know the actual volume. I am sure they were just a stock .060 over kit.
Bore: 4.112 Stroke: 3.784”
Head Gasket Compressed thickness 0.038"
Head gasket Bore 4.400" bore
Head Gasket Volume 9.90 cc volume
Head Chamber Size 72 cc
Deck Height ??.060??

Displacement = (4.112 ÷ 2)2 x 3.14 x 3.784 x 16.387 =823.0504
Head Gasket space = (4.400 ÷ 2)2 x 3.14 x 0.038 x 16.387064 =my calc 9.46367 edelbrock says 9.90
Deck Height space = (4.112 ÷ 2)2 x 3.14 x Deck Height?.060? x 16.387064 = 13.05?
Compressed Volume = Head Gasket space + Deck Height space +
Piston Top volume + Combustion chamber volume = ~94.10 or ~94.95
Uncompressed Volume = Compressed Volume + Displacement =~917.1504 or 918.0004
Compression Ratio = Uncompressed volume ÷ Compressed volume =~9.746:1 or ~9.668:1

Here is the info I have so far. I guessed the Deck Height and didn’t enter anything for valve reliefs in the pistons. This may at least give a ball park idea. I came up with 9.76:1 or 9.668:1 SCR.

Any advice is greatly appreciated.
Thanks, Josh