What are general tips for larger than average people?
However, this is really hurting my ability to wear certain clothing. My tailor does good work, but he still calls me a nightmare because of all the recuts and alterations required. I typically have to buy off the rack and get it tailored as opposed to getting one made with me in mind.
I am currently sticking to two-button suits and never a vest or a cardigan, as I heard they wouldn't work with my shape, is this true?
Even if I tuck my shirt in correctly it still seems to bunch at the sides giving me an unpleasant roundness.
Buy larger than average clothes ;)
Most OTR stuff is made for average height men with a spare tire. I'm very skinny and not a ton shorter than you, but I've got a muscular chest and shoulders. I feel your pain, but short of MTM/Bespoke you're kinda screwed. I spend more on my tailoring than my clothes.
Three button or a three roll two might de-emphasize your height, esp. a glen check or hunters plaid tweed but its impossible to tell without you posting a sample pic of yourself.
You need longer shirts, and you can get sock garters, though just getting longer shirts should help. Also, you need to taper them more.
Hope that was somewhat useful.