Nice build SM and admire your "have a go approach" this is what its all about learning and if you make a mistake well you start again, the bronze bearings are a good choice and the company that make them are called Oilite I think they have a website.
i looked at some bearing called Pacific which were a ceramic bearing and they were the dogs bollocks very,very smooth and they were awesomme and I have been contemplating using these over the skate bearings,aluminium angle approach but worked out at about £12-13 each but I have not ruled them out as I can guarantee the precision would be phenomenal with solid ground shafting, take a look at them you will not be dissapointed :)