i plan to invest $100 weekly for 5 years ($26,000 total) to average market entry.
Op I think your calculation is wrong because if you want to be investing $100 in every week and remember in a month we have 4 weeks that is $400 a month and we have 12 months in a year that means 12 times 5 we give you 60 and then $400 times 60 will give you $24,000 so how can you are having $26,000?
I don't think this calculation is necessary even though in a month we have roughly have 4.2 or 4.3week whereabouts which will amount to $5.2k or $5.3k in 12 months, then the hypothetical $26k will be achieved in 5 years time.
but if I may ask is that how big your Income is that you will be investing $100 every week.
There is no problem if anyone decide to invest $100per week provided he is not investing above his discretion. I guess he has a good discretion and or reserved fund. Iif a guy receives payment of $2k per month, I believe $100 per week can be available. Actually guys who invest $100 should be equal to the task of a better discretion fund.
Bitcoin investment is not a competition so we should always ensure to invest moderately or based on our capacity
I don't think this user is even investing for competition purpose, but could be investing to increase his Bitcoin stash for a speculated time frame. Though sometimes guys may invest aggressively withouts a good strategy that may end up fucking up, but for now ther is no proof.