Location? What's the budget? There are many articles about tie quality and the details might be worth perusing, but apart from not wearing a polyester or worn-out tie, it's unlikely to have an impact on the job. Shoe and suit quality are more important, but the information probably isn't compiled into a few great articles to show you. Re dress shoe quality, "welted" in the description usually means not awful quality (though some non-welted shoes are good).