How do Traditional Latin Mass going Catholics usually prepare and receive their sacraments of initiation? Our parish is starting to off a Traditional Latin Mass and there's a group in our diocese that has their children confirmed in the that form as well.  It's quite a bit different, we were wanting to do this for our kids, but we found out about it way too late.  But I'm wondering, what are the ages and what kind of preparation do Traditional Catholics do for the Sacraments of Baptism, Confirmation and their First Communion?  What ages are appropriate for receiving these sacraments?  Is First Communion generally withheld until after Confirmation?
The ages rarely differ from the general practice in that region. As far as preparation goes, the particular pedagogy might vary (e.g expectations may be higher), but it's not substantially different, certainly not in any uniform way.
Some parishes that host both forms of the rites use a common sacramental preparation program (Especially for converts), some have them separate.

Is First Communion generally withheld until after Confirmation?

That would be up to the diocese and not dependent on the form of the Liturgy. The reason why some places do Confirmation before 1st Communion is a desire to restore the traditional ordering, but that ordering was displaced not with Post Vatican II reforms but with Pius X's lowering of the age of First Communion to 7.