Thoughts on this cycle

Thought on this cycle for off season. Stats- 5’10 190lbs roughly 8-10% body fat (just finished a cut from 210lbs to 190lbs).

Cycle: 400 test, 400 npp, 200-400 masteron for AI properties and 3IU growth.

It totally depends on what your goal is for the offseason and, to some extent, what you were running on your cut.

8% is very lean and I would suggest letting that settle for a few weeks.

Most folks do not include Masteron in a gaining phase.

It also acts as a serm, not an AI in most, so that may influence what you run.

It’s not ideal. Masteron is not an AI. Mast is a cosmetic drug. It’s not great for building muscle.
Why NPP and not deca? You like pinning ED?

Personally this is what I would run
wk 1-14
250mg/wk test
150mg/wk deca
400mg/wk EQ
25mg/day proviron
25mg anadrol midway when lifts stall
AI on hand but you may not need it with the EQ.
N2Guard

Also I agree with @EFShadow, don’t just jump into a growth phase after a diet. You need to reverse diet until you get back to maint and then sit there for a few weeks and then start adding in casl/drugs.