I really like both names.
Desmond Rhys and
Rhys Owen are excellent combos. The flow of
Desmond Jorgen is a bit off.
Going with
Desmond Rhys would allow you to use both
Desmond and
Rhys. Either
Desmond or
Rhys would work with
Heidi, but I think that
Rhys goes with
Heidi a bit better.