More importantly, first make sure you have a pooling clause in the lease, which should be a given! Add the horizontal Pugh, if you can, to release the deep rights beneath the producing horizon in the secondary term after production. Often Lessees are reluctant to release above the producing horizon, especially if there is a potential to plug back and produce another formation uphole. Since you have an undivided interest in the 200 acres, it would be favorable to make sure you have a provision to pool the entire tract into a unit, especially for gas. If you can't get this, get the vertical Pugh as it would act to release after the primary term of the lease the portion of the 200 acres, if any, which may not have production or may not have been pooled.
As a note, a vertical Pugh clause acts to "segregate" a parcel or a piece of a parcel, from another or from the whole, on a surface basis. A horizontal Pugh acts to sever depths subsurface from one another - deep zones from shallower formations, for example. This is often misstated in this forum.
Good luck with your lease -