Good plan.
I'm running Amsoil Signature Series ATF (ATL blue cap) and it's performed well.
I think 30k is the limit I would do on DW-1.
People have used MaxLife for years in Honda A/Ts as well as Amsoil Signature. It's just a bit more money up front if you do a proper conversion to either.
On ours, I had a shop do the cooler line method to completely swap out the old Honda fluid so the new total fill was all Amsoil. Either way, fresh fluid more often keeps these little A/Ts going a long time. Good idea to swap the inline now, after you've done a couple of changes first; in case there was any cleanup going on the current filter hopefully caught that.
Does your model year have a noticable transmission case whine? I know the 07-08s GD3 would tend to. Mine went away swapping from DW-1 to Amsoil. .02 YMMV