you have a valid point.. however I always tell guys don't go into pct with high estrogen or raisin nuts. thats why running the proper ancillaries on cycle are so important. in your case just run an AI correctly and you will have the estrogen problem covered, and of course run a PCT.
that cycle would work fine.. it does take prop a couple weeks to reach peak levels though so cutting it short at 6 weeks is leaving gains on the table but thats fine since its only your 2nd cycle.
also keep in mind masteron does combat estrogen as it is. I can't point you to 'studies' or evidence but its well known in the AAS community that it will... if you want to get color on your situation just run a blood test during cycle and see where your estradiol is at.
and of course to combat raisin nuts you should run hcgenerate on cycle or atleast hcg towards the end along with your HMG
guys who run a cycle ahead of a competition will run dry steroids and masteron is a favorite.. however being dry like that can have adverse effects like dry joints, and the dryness will go away once the mast is out of your system so its temporary anyway.