Hi Jack--The only change I would make to that line would be with v001. That's the cluster (PSU) id code and it is typically numbered 1, 2, 3, etc., within each survey. If you don't renumber the clusters in the combined file, Stata will think that cluster 1 in each survey is the same cluster, etc. You need to renumber the clusters in the same way that you renumbered the strata (in Stata the command would be "egen clusterid=group(survey v001").

For a very few surveys (only the Egypt surveys, so far as I know) the PSU variable is v021 rather than v001. Usually v001 and v021 are exactly the same. If they are not, you would use v021 in svyset.