You can take one reverse turn commencing DC and ending LOD and a second commencing LOD and ending DW. You could keep going after that commencing DW and ending wall, but unless doing some sort of check back into a corner it would be an odd place to be.
Creating a smoothly flowing outside partner action on the last step pretty much requires a precise 3/8 turn to be made - do less and the step is too sideways for the feet to cleanly pass, do more and one partner has to be pulled off balance to make the turn. Two 3/8 turns in succesion (DC to LOD, LOD to DW) are often choreographically usefull, three are in a few places, but four are almost unheard of.
One last thing - the lady's forward open reverse is a feather finish, which is to say it is identical to one of the most challenging steps in the international standard syllabus. It's worth studying the technique of that, particullarly the timing of the foot action and the limitation to the gentleman's rise if the lady is going to achieve this.