if you are happy with your solution there is no need to do anything else.however Glow step revolution by Torxlift allow for lots of adjustment.They are supported by the ground and are not simple floating/hanging steps like the steps posted above.
Because they are supported by the ground they are very stable.
GSR's also adjust out from the trailer and can be operated in three or four step mode depending on the terrain. Lastly the feet adjust which allows them to land stable on unlevel ground.GSR's maybe a better solution.they are pricey but they may eliminate the need for the additional step stool.
Again they may not be the perfect solution but they are worth researching.