OP stated Hiruzen has Edo Hiruzen feats. Hiruzen was brought back in the same form he died. In case you didn't know, a shinobi can perform everything he/she can do as an Edo zombie; just on a smaller scale or less degree. That is because an Edo has the same amount of chakra as when they were alive, only it never runs out. So this Hiruzen can perform the same jutsu, but he isn't going to be able to spam it, and he will feel fatigue from it. Yes, I said Hiruzen couldn't do both on his own unlike Gaara did, in order to force you into bringing up the Kage Bunshin arguement, which will deplete his chakra a whole lot faster and leave Hiruzen unable to spam his large scale elemental techniques.
A stand still Earth Wall isn't going to do a serviceable job at blocking something that can freely move around and above it at Gaaras will. Plus, the fact that Hiruzen will be throwing a whole lot of chakra into a wall large enough to match Gaara's sand tsunami. Enmas pole extension has never shown to be nearly as fast as you're depending it to be, considering Orochimaru was reacting to it very comfortably. So you're going to have to show some proof on how it's going to continuously outspeed Gaaras sand; which was proving to be serviceable in fights with top tier speedsters like Minato, Gai, and Kakashi. Hiruzen can keep on utilzing his fuuton, raiton, and pole to defend against Gaara's sand assault combos... he's going to lose in a battle of attrition so it's not even worth the arguement.
But it does though. Hiruzens suition is going to do the same thing as Mei's did, make Gaaras sand wet. Unfortunately for Hiruzen, wet sand doesn't hinder Gaara's sand manipulation or attacks by any notable margin, as it was still capable of trapping Madara in a sand coffin. Again, Raiton isn't the sands weakness [
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]. Only strong penetrative attacks are. Already we'ere assuming Hiruzen has about 5 or so Kage Bunshins, and spamming large scale elemental attacks, which isn't within Hiruzens capability. And I haven't even factored Gaara matching him with Suna Bunshins to prolong this battle to strain Hiruzen even further.
Because the reasons I stated in my previous post, in addition to the fact that Enma's pole extension isn't even fast. Furthermore, that feat of Enma's pull pushing Kurama back was off panel and doesn't add up considering it didn't push Orochimaru back [
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]. So I have no reason to believe it'll overpower Gaaras sand defenses.
Pretty much addressed all of this already.