driveshaft angles

Agreed, but OP said 'not a race car' he wants smooth cruising only.
I get it. My point was that he "probably" needs something somewhere in between granny's church goer and a prostock. I've never in my life set drive line angles at rest......well......you have to, but you understand what I'm saying. You have to guesstimate based on acceleration. Setting it at rest will result in a negative drive line angle under acceleration and that's a sure fire way to get a vibration.