Go for it.
I dont have current Nimrod or E3 experience nor as an AEOp but I do have experience. A good AEOp as opposed to a 'knocker' is worth his weight in gold.
The dry sensor operators can talk MHz and ARP and know what is going on without all that radar cr*p. But you need to know what the enemy kit does to work out how the enemy is using it. AEOp can be a good route to intelligence and also to a commission.
The only catch is the lack of direct recruiting to AEO. Look at some AEOps like Brian MacLaren (sorry chaps) Sgt to Gp Capt.