I did just look up aspects of your dilemma on the DCA website, so yeah, it would take you about 7 years at $96 per week to invest $35k into bitcoin.  Historically, that would have gotten you 40 BTC, but currently, you may well not even be able to reach 0.4BTC by the time that you invest $96 per week and that 7 years plays out.. but you will have put $35k into the system.. better than not putting anything in.. and each of us have to start where we need to start in terms of attempting to accumulate a BTC stash that we believe is reasonable.. and what we need to sacrifice to reach our goals.

Fuck McDonald's but if that is the best that you can do, then you might have to get two or three jobs since they likely don't even allow you to work a full time week. If you are young you might be able to tolerate, but seems better to build skills, but if you are stuck working a variety of dead end jobs, then you may need to work 20 hours at each (60 per week) and then just UP your game in terms of investing $1k per week into bitcoin rather than $100.. but still you gotta get the rest of your shit together too.

I give up.