It's very likely that 180mg from that starting T level may be more than you need, especially if you're feeling so good. Dropping down to 160mg (or 170mg first for 3-4 weeks) and seeing how you feel would be just fine. 2 months in (8 weeks) is the soonest we would make adjustments, so it sounds like a good timing.

HCT would be influenced by dosing. The resting heart rate wouldn't be as much to do with dosing, and should pass. It's typically not really the TRT itself, but more your adrenal glands most likely. When someone is low on Testosterone / low on energy, your body can sometimes crank up your adrenaline production to help offset your energy deficiency. Now that you're having a normal amount of energy from your sex hormones & their downstream effects, those glands don't seem to have gotten the memo yet. Normally your body starts to understand that it doesn't need to overproduce extra adrenaline anymore if you're someone who previously had those overcompensations happen. Though it can take time. It's best to think of it as someone drinking a cup of coffee every morning because they stayed up late every night, but then they stopped staying up late & now the coffee is too much and giving you the jitters.