I switched to cv joints (using adapter plates) about 10 years ago and they completely eliminated my vibration under hard acceleration. Your installation using moon plates (common in Porsche community) and Schnorr washers is probably better than mine. I used flat washers without moon plates and torqued using a small amount of red Loctite. Considered safety wiring but decided against unless one came loose. Couple of items for your consideration. 1. All CV joints are not the same . GKN Lobro is usually considered the best without going custom. 2. CV joints require packing with grease. I recommend using Swepco 101. 3. 108mm Aerodynamic or High Speed boots allow easier installation, torque of bolts and they are more compact . Good luck
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