5.7 rebuild

Ok dropped the 5.7 eagle hemi off at machine shop Monday to have it all checked out to make sure all is well for build. Question is what pistons to get for it. It's not going to be a 700 hp 7k drag car. Nice street strip car looking to get around 500 hp with the stoke stroke , bigger cam , headers and not sure if carb or fuel injection yet. Anyway I'm rebuilding engine and I curious will the Mahle pistons be ok for it . I won't need forged I'm not going to spray it or turbo in the future. Also should I do main studs or just bolts. Also mine has mds and vvt so can I just get stock non mds lifter or will I need some aftermarket ones like comp cam. Do I keep the vvt or omit it. Another question is what timing chain to get. Is a stock one ok or need I go to a single roller or double roller. Looks like it all comes in a kit with tensioner and all. Any suggestions on what one to get. I assume just a new stock oil pump is ok. What oil pan fits best in my 70 dart and what dip stick tube. Thanks in advance. My buddy who is going to help build is good at putting engines together however he hasn't done a modern hemi. Anything to watch out for.