Interested to know how many suits you have in regular rotation per season. I'm very much on the building stage on custom tailored items and I plan on getting 4 pieces a year. I wear a suit 4 days a week, odd jacket one day.Rob
The shirt you linked is typically spring/summer casual shirt. I assume the wedding will be more formal and white will be most appropriate. If you really want/need to go blue, you should pick a solid light blue shirt with a spread collar (perhaps contrasting white collar and cuffs) and consider adding double cuffs.
For a tie, you should look to a more traditional wedding tie. Do a search on the site for some examples.
Congratulations and best to you and your bride.
I have had 15 or so shirts made my MyTailor and still wear a number of them. M Kenny did the fitting and he made the shirt in the dimensions I requested. Price is good. I have switched to a more expensive option mainly because of the fitting process. The new shirt maker has made adjustments to my lower right shoulder, added softer unfused cuffs and collars. The cost is more than double but I'm happier with the results than MyTailor.