Is this a off-season cycle or a competition cycle?
What is your height and fat mass?
It is hard to judge your cycle without knowing the above mentioned two questions.
The cycle itself is quite generic, and well planed. Your lifts are also very solid, assuming it is 100% raw and performed in the same day. But I think it is not very competitive at your weight class (125kg/275lbs). Instead gaining more bodyweight/strength to improve your performance, I think you should consider dropping down to 110kg/242 lbs, or even 100kg/220lbs if you are short.
If you are on the chubby side, I would suggest a cutting cycle first (or two).
Week 1-8 Test-e 250mg E3D
Week 4.5- 9.5 Tren-a 35mg ED (or Masteron /Anavar 50mg ED)
Week 11-14 nolvadex
week 1-10 adex as required
week 2-9 HCG 250iu eod
T3 and clen can also be added to maximise fatloss, but probably not a good idea for a virgin cycle.
You will ease into this cycle without any frontload/kickstart. As test/estrogen builds up, you can ajust adex dosage to suit. By week 4, the test-e would be on "full force". You will then introduce the short acting trenbolone. If you do not respond well to it, you can replace it with Anavar. I recommend a ketone diet with high frequency training to go with it.
You should be able to cut down to 230 pounds without any problem. With the help of drugs, you should be able to hold on to your muscle mass and strength, and you may even improve slightly.
Depend on your personal preference, whenever you want to compete in an major event, you can do a cycle leading up to the competition. You can either use drugs to drop down a class, or move up a class. I think for most athletes, it is ideal to train into a show and stay drug free during the off-season. My idea is to stay @ 230 lbs when not competing, and drop down to 220lbs ripped for PL competition. The AAS would provide approximately 15% strength boost IME in this scenario.
If you want to move up to the top of your weightclass @ 275lbs, then just do the test/tren/dbol cycles. It will get you there. But IMO the typical image of a powerlifter, some barrel looking dude benching 600 pounds with a triple layer shirt, super back arch etc; it is NOT apealing.