Looking good. It may just be that you are yet to get around to it, so I apologise in advance if that's the case, but it looks very neat and clean on the "dome" of the bucket, in particular around the dent. I recommend adding further weathering around the outside of the dent as well as some scratches and scuff marks over the dome as a whole (Ole'Boba don't take to much care of his buckets apperance).
As to a timescale for your Bobamaker t-visor delivery, I can't really say with any authority given that I'm in the UK, BUT... he has always been fast with posting items to me and others in Good Ol'Blighty and I understand parcels often arrive sooner than expected when posted overseas.
Dont forget that you will have to cut out, not only the front part of the visor slot but also around the sides of the eyes. I also recommend the use of a hot glue gun for attaching your new Bobamaker visor into place. I've had 2 of his visors (1 for a Rubies Jango and another for BM's helmet) and having glue gunned them in, they are yet to fall out! It's also easier and less messy then anything else.