Maximum Performance N/A 383 build. Input wanted from engine gurus.

Think I can get away with just a set of ARP rod bolts?

Don't really want to change the main bolts as the bottom end is already assembled unless it is absolutely necessary.
Well that's up to you, if you want to trust those rods, arp will be your best option for bolts.
Have to be mindful of torque specs though as more torque on the bolts will require a little resizing the rod.
If you were to change to main studs you would need the block line honed also.
Since it's put together run it like that but you will want to be mindful of excessive cap walk.