Sounds right to me. But i think most pistons are 4 valve relief so they work on both sides. If getting them for less cc just get flat top you wont usally need the reliefs but you will need to check to be sure. Or get the 4 valve reliefs and save a few bucks. Ignore me if you found them for the same price. Its all stock driven so if they have too many of something the price drops.
Get the block decked its not the costly and will help with compression and cheaper pistons. Or get pistons that ride higher and close up the deck hieght to the .010 if you can and use stock gaskets or you can use the 1094 .015 head gaskets to keep the quench area close.