How about some pics of what you are going to use. If you rail is YHM you may want to give them a call and get some info on what your are wanting to do with what you have?
And as JonM stated. First of all you do not have the fixture to properly drill the taper or dowel pin holes in the traditional front sight housing. In all probability if your tried the sights would not be able to be properly adjusted windage wise. You could use a gas block add on front sight assembly but as I said in order to give you better advice we need to see some pics of your barrel and components you are going to use.
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