Carl, one thought on the DeltaFL vs DRICore ... your basement floor needs to be level already, as no real good way to shim under the full sheets. You probably made sure the builder did that, but just in case ...
Other than that, I don't think laying the floor will be difficult at all.
Not sure what you mean by
I planned to put green glue between the non Tongue&groove areas...
? You mean on the edges you have to trim? Not sure how rigid the membrane is, but do you need something of a more structural nature so the two edges of the osb don't separate vertically under traffic? Biscuits?