You won't be able to get a matching waistcoat. If the wedding is during the day wear a white shirt and a light grey, light blue, or buff/beige (my favourite) waistcoat. If the wedding is in the evening just go with two pieces.
If you want a dart-less coat as nice as Voxsartoria's you'll need to go to Edwin Deboise. You won't find a dart-less sack shaped so nicely anywhere else. But I agree with that you're over-concerned about the matching. The matching is quite acceptable in your sports coat with the patch pockets. It's the same with flap pockets.
I would wear the ticket pocket (provided I could tuck in the flaps) before I would a two-button dinner jacket. But if only one detail is off I'd still consider it. That detail could be:
a second button
a ticket pocket
flap pockets than can't be tucked in (fixing that would probably be too much work if possible)
a centre vent (though it can be fixed)
But if more than one of those is present it's definitely out of the question.
Anyone should be able to do this. Sewing a button is one of the easiest things to do. You just have to make sure whoever sews the button knows how to shank it. My dry cleaner doesn't know how. And the buttons need to be sewn on in the same pattern as the others.
Originally Posted by Grayland
How about a few grenadine ties from www.samhober.com instead? They don't have the flat bottoms though.
Grenadines can't be compared to knits. Knits are casual and grenadines are much more formal. Grenadines are constructed just like a normal tie. And knit ties with pointed bottoms always look awkward to me.
I have a bunch of Brooks Brothers knit ties that's I'm fairly happy with. I've gotten most of them...
Originally Posted by bjan
Just buy it and if you find you don't like the pleat
a) get a tailor to remove the pleat
If the pleats are forward pleats, properly removing them is a much more time consuming task than removing reverse pleats. The trousers are cut differently. However, sewing the pleat into a dart is always an option.
That suit is either the wrong size or just a bad cut for you. A cheap suit that fits you is infinitely better than an expensive suit that does not. You should care less about names and more about quality. If your tailor makes you a suit (and he is good at it) it will be better than anything you can buy off the pegs. Look into English cloths rather than Italian. Holland & Sherry and Scabal are some of the best, though they may not be names you know. Italian clothes are...