You would be better off, to order the XS front sight/peep SET, since a front sight much higher than issue will be needed in order to zero the rifle, because the XS peep ( and the Williams WGRS & the Skinner) all sit much higher above the receiver than a side-mounted peep, or a Skinner LoPro peep.
At least with the set, the proper height has already been worked out for the buyer.
.