I converted mine to seven digits years ago, thanks to an extra wire and a Shabow custom rom. Great upgrade and highly recommended, whichever method you choose.
I see you have the hooded drops in the Meteor bank. Replacement drops with hoods, hot stamped or with decal, are readily available. The tombstone variety, like those in your number banks, are NLA and must be sought out in the used market. The tombstones drop better, in my experience.
FWIW, the original drops had decals, not hot stamped. Action Pinball sells replacement decals for Meteor drops and the spinner, but I am not impressed with the resolution. They aren't bad, they aren't good. They're simply OK, in my opinion. I need to make own one of these days. I have the Meteor spinner art on file and made my own sticker for that.
And, in case you missed this information, the Pinball Pimp now sells Meteor cabinet stencils.
Enjoy your Meteor.