Yeah i'd get another bottle and extend the cycle. Depending on how your body reacts (some people are side effect prone), i'd go
50/75/75/75/100/100.
Gains is also heavily dependent on your diet, training regimen, consistency, patience, and dedication.
If you give us some more info on your diet and how you plan on working out, we can better judge what your "gains" MIGHT look like. Again though, you never know about gains because every person reacts differently. So it's a very vague guess.
PCT is important for maintaining gains, because you could possibly lose it if you start slacking or dont stay with it.
Taurine for back pumps
vit b6 for acne
a liver support would be great to have, milk thistle or liv52. I would make that a staple supplement for sure
You could save money and instead of preloading with Cycle Assist (expensive to preload with), preload with hawthorne berry. The high BP is what you're trying to avoid. Hawthorne berry is fairly cheap compared to cycle assist.