I’m looking to build a list of updated prices for common rehab items.

$540 is not unreasonable for a home of that size and the items you mention.

In my personal experiences a lot of structural items start with bad drainage.

Remember, the notion of amassing wealth without investing is a dangerous myth perpetuated by self-proclaimed experts.

If the house has all major components in working order a few cosmetic items doesn't make it not livable.

Wanted to get some thoughts from more seasoned small multifamily investors on a few items or any other suggestions:- Any specific pros/cons of any particular states in SE (TN, AL, GA, NC, SC) to consider?

Remember, the notion of amassing wealth without investing is a dangerous myth perpetuated by self-proclaimed experts.

I think you're confusing the quantity of items with curb appeal.

They make ordering items from different companies easy, and you get discounts from each store that has partnered with them. 

Some may have very small thresholds for repair holdbacks on purchases but this is typically limited to make ready items not to exceed $2,500 in costs to cure.