A few things here...
These engines are 12:1 not 9.5:1 At 9.5:1 you will not make 840 IMO..
Also these heads do not work OOTB.They need extensive work to even make them usable. And to make them flow 410 they need a full CNC port job, not just SOME work.
I hope you got all your accessories with your motorplate and it's complete, otherwise good luck finding all the parts that work with that particular motorplate. There are many different styles, that use many different water pumps and front timing systems. For the most part alternators and oil pumps will work with all of them.
Just to let you know you would have less in a complete engine than putting one together piece by piece. You can get them complete from around 5k-12k from different builders and teams... 12k is for a brand new one..
Depending on what trans you are planning on using you will need an adapter plate.
When buying your pistons makesure they have rings with them or have wide oil lands or you will be shoveling out around $1100-1400+ just for the rings...
Just a few things to look into....
