Hello bigmarco,
I agree with you that it's best to have the oral appeal in where u can talk to the judges/members of the board straigthforward with your papers on hand to defend & find answers on the reason about your wife's spouse visa refusal.
If u want to gain help from the professional, you may find the MP in your area (mostly u can check it online) & check their office schedules for a free consultation. They will give u suggestions.
My husband did an Oral appeal (but different story...it's about my son's appeal).
Wish you all the luck & hope to hear good news about your appeal in the future.![]()