It depends on which Orthodox Church receives you, as they have different rules for reception. I think that the Russian Church recognizes certain Roman Catholic sacraments and does not repeat them. In the strictest and most traditional interpretation, if you want to become Orthodox then you will be baptized into the Orthodox Church and at the time of baptism all sins are washed away, and the previous marriage is not recognized as an Orthodox sacrament. So I think in this situation the new marriage would be treated as your first marriage.
That being said, you certainly should not do this out of convenience, but because you believe the Orthodox Church to be the True Church. If this is done to save money and time from an expensive process in the Roman Catholic Church, then the Orthodox priest should see this as suspicious and might question your reception.
At any rate, there is certainly no tricking God with technicalities between churches. This is a delicate pastoral issue and your wife's Orthodox priest should be the one that you talk about this with.