So after applying as an Ammo Tech then looking at RE Electrician and now joining as a CS Eng RS do you not think it would be wise to wait until you've actually passed basic and trade training before looking at future postings as IIRC an JNCO?
Again, I'm sorry to disappoint you - but if you are a CS Eng you will not be going to any active EOD units. 660 as I said before is manned by CS and EW OPERATORS. There are no exceptions, or pleading with your chain of command. Trust me on this.
11 EOD and 33 EOD are staffed by RLC ATs and RE BDOs respectively, with a smattering of Def EOD Ops (all arms) - again don't get your hopes up - the Def EOD Ops have to be SNCO or above - there's a DIN somewhere.
The equipment care/installation of EOD equipment is civilian contract or REME - I've repeated this just to make it clear to you. The FP sqn (225) might take you but this is not, no matter what they claim, an EOD role.
Sorry if you have been misguided whilst joining up, you won't be the first or the last.
Enjoy 3 Div.
Edited to add:
If you don't believe me, speak to the RCMO at Blandford.