Hall is easily worth 2nd and a good prospect 50% retained. Neal is easily worth a 1st to dump IMO and I dont think Benson is that great so I wouldnt do it

Dude you are way way way overpaying Hall will not get a 1st let alone a 1st plus

I would agree, but dumping Neal's contract is worth giving up the 1st.

Not to mention Neal has more goals that Hall this year lol

Fine, pass up the chance to get rid of Neal's terrible contract.

Hall in the top 6 instead of Kahun makes the Oilers a better team, and if they don't want to bring Hall back after the season, they now have a ton of cap space to sign someone else.

I'd do this trade only because Hall has no term, and Neal is dealt away.
You are right, the trade is essentially:

Hall for Benson
Neal + 1st for cap space