BurningDesire:
The most probable reason you are getting mixed answers from DFR, is that the only staff that are able to give advice on medical issues, are the medical staff themselves. CC's DI's and Case managers aren't legally aloud to give advice so you tend to get hazy ansers from them.
If you can prove through your GP and whatever specialist you may have seen that the arm will not create any issues during your career as an officer and a pilot then there should be no problems. The only thing I can see happening is that the ADF may want to examine the issue a little further through AVMED. This may hold up your application for a little while.
Lying on your medical questionaire is up to you but Oneflewnorth is bang on when he says that you can be discharged for it if you are discovered to have lied. Honesty is the best policy but cover your bases by providing GP's letters and maybe the opinion of a specialist.
Oneflewnorth:
I'm not a Dr but i just wiki'ed Varicose veins... I'm not qualified to say yes or no but as I mentioned above, cover your bases with information for DFR from GP's and specialists.
All the best to both of you! and good luck for the aptitude test BurningDesire