I'd take Dalvin over 1.2/1.8.
I personally don't see any threat of a RBBC and to me most of the reasons people would call him a sell high I don't buy. Barkley would probably be the most challenging for me but I could rattle of reasons to sell high on every single top half of first round startup players right now other then him. The only reason IMO he should be considered a sell high is if you think every player who reaches the top of the dynasty value chart can only go in one direction. Which is a completely valid opinion to have, but sometimes you can milk a few more years and still exit with a similar return.
I don't think 2 and 8 for him is bad, but I'd not do it right now myself.
I personally don't see any threat of a RBBC and to me most of the reasons people would call him a sell high I don't buy. Barkley would probably be the most challenging for me but I could rattle of reasons to sell high on every single top half of first round startup players right now other then him. The only reason IMO he should be considered a sell high is if you think every player who reaches the top of the dynasty value chart can only go in one direction. Which is a completely valid opinion to have, but sometimes you can milk a few more years and still exit with a similar return.
I don't think 2 and 8 for him is bad, but I'd not do it right now myself.