This would really depend on the colorectal surgeon's assessment with regards to the severity of your hemorrhoids and your symptoms (as in how it affects your lifestyle).
If the episiotomy wound is away from the location of the hemorrhoids then it should not be a problem. the only caveat is that you need to make sure that you keep the wound clean to prevent secondary infections of the episiotomy wound following your hemorrhoid surgery.
In an ideal world though, it would be best if the episiotomy completely healed then you can go ahead with the hemorrhoid surgery.