Wow Captain Name-Cally. Do Chill pills actually exist? You should take a couple. But don't OD, we need your bad advice to help stoke a useful contrast to good advice.
Don't even know where to start with all your horrible contradictions...but probably the most glaring:
You can never have too many FPs in inventory. That comment alone should be so blatantly wrong to anyone who has ever played seriously that it doesn't even merit discussion.
But anyway:
So on the one hand, save as many as possible, on the other hand, spend them since you do at least seem to understand that you only benefit by actually spending them. OP is never going to snipe first on a level 60 Arc buy spending 300 FPs, as you know. He doesn't have an Arc I don't think (or at least very low level), and CLEARLY stated he doesnt have big sniping opportunities. So him saving 10k FPs is really stupid for him to do.
@Salsuero your main problem, and that of most people here I clash with, is you all are so self-centered that you can't apply logic to OTHER people's situations. 250 FPs in inventory would be terrible for you, since you spend a lot to snipe valuable spots. HE'S NOT YOU. He clearly stated his ability to snipe and it requires far less than you would. As such, WHAT ACTUAL NUMBER do you think he should keep on hand? You have 15k, that is too many. You've stated 100 is too few. that's a really big range. So pick a number he should target. You talk in ridiculous non-helpful absolutes. So give a number that one could find useful maybe.