You don't have to get the waist of your jacket suppressed. You don't have to get your pants waist perfect. Dapper District does not require that you get your pants legs on sleeves tapered.
These are all excellent but optional ideas. Not optional is having your dress pants tailored at the cuff. If you don't have them tailored, they will puddle at your ankles and make you look like you are wearing your older sibling's hand-me-downs.
This is the kind of alteration that you can trust to your dry cleaners. No need to even visit your proper tailor if you know the length you want.