Much better fit to start with for that second one. Minor nips and tucks are perfectly acceptable and expected. If you start having to think (or are advised by others) you need major work done to a garment, skip it and go for a better size/fit. You made an excellent choice.
Do a search on here for wedding ties to find something elegant and appropriate to go with it (hint: not a bow tie).
That looks like the HR Outlet at Heartland? I've had mixed luck with advice from the SA's there. One tried to get me into a larger jacket than was appropriate just so the pants fit without having to be let out. I was swimming in the jacket, and stood my ground on the jacket size I normally take. Took the suit to another tailor who let the pants out with no effort at all. It helps to have a reasonable idea of what generally fits and what effort needs to be put into the alterations.