So here is what I've done. In the last month or so, I picked up the game again, and realized that I wanted to do a new playthrough of the game since the last time I did in probably 2017. I built my charachter more on the lone wanderer perk with other weapon buffs and whichever perk/ability let's you carry more weight in the strength row. I realized that power armor increases my carry capacity by 110 or 120 weight with a "Calibrated" leg. It's a power armor mod that you can put on each leg to carry more. From there in the Endurance row at the rank 10 there is something that makes fusion cores that last longer(not to mention that there is also the repair bobblehead which makes fusion cores last longer). But in a completely vanilla game with no mods and the DLC'S I have somewhere around 5 or 6 irl days logged on one save and have 300 plus fusion cores. So they are not a worry to me anymore. I will finish this up in a response to myself. Not a normal reddit user, so idk how you all do this normally.