My first 300mg cycle

[Honkey_Kong]

This is not enough food for a guy 5'10/195, you are very likely in a catabolic state. You can very likely accomplish your goals with a caloric increase.

For this you likely need a nutrition coach.

^^^ A good nutrition coach is more valuable than running gear. OP you'll bust through plateaus, you'll put mass on AND you'll feel better once you have a diet that supports growth.