Yo dude, first off the lump is called gyno, (gynecomastia), if you do not know what this is, look it up.... Second, as "Yes" said, this is wayyy to heavy of a cycle for your first ever cycle.... You need to be running a test only cycle to know how your body responds to side effect off aas.
That being said, if you do not know the side effects of aas, (like gyno, and many others), you shouldn't be taking them until you further make yourself educated of them!
I would definitely drop the tren, at least.... but you'll probably still do it, most people get scared and ask questions about their symptoms then they go ahead and do the shit anyway because the are eager for gains. You shouldn't even be doing the mast either, but tren is really rough on the body... IMO i'd drop both tren and mast and run a test only cycle but that's me!
And dude, little yellow pills you think are letro and shit? you gotta know your shit better... Letro WILL get rid of gyno, BUT it will almost completely deplete you of estrogen! Basically you have no sex drive and some other issues, because you DO still need SOME estrogen, you can't completely get rid of it... It will deplete 98+% of estro....
As far as nolva, i wouldn't run that during a cycle its fucking useless while on cycle... I don't care what some ppl say! its not an Aromatase inhibitor (AI) its a post cycle therapy (pct) you need to run it post cycle therapy (pct), it would help the gyno (your lump) during post cycle therapy (pct) but not now...
You need to run Aromasin, it's the only suicide Aromatase inhibitor (AI) out there, the others don't necessarily work as a suicide AI... Look it up, bc im already rambling on more than i need to for you, i am just trying to steer you the right way!
So i think i covered it.... by the way bump your test up to 5-600 mg, every mon & thurs. (250 mon-250 thurs.) You can run the mast if you feel the need, drop the fucking tren its too harsh right now! but id still just run test at the dose and say fuck the others bc of sides and not knowing how your body can even handle test... just my opinion!