One of my very few strengths is building pitching for a pitchers park.
Control is a must. In a park where you get more outs than normal when it's put into play, get it put into play. Don't give free bases.
Defense is a must, ESPECIALLY up the middle. I'd sacrifice two bats at SS and CF if you think they can get a Gold Glove. See above.
Velocity, not important. Splits still important, but above 55 will do. Pitches 1 through 5 important, but...I have a closer with pitches 77, 64 and 42 up for ROY with Wichita, and another with 2 pitches above 80 gassing over an 8 ERA. Plug em in, figure it out.
Hitters, you'll need advice elsewhere.