That exactly why you should focus more on accumulating Bitcoin, you're still very young and if you use this opportunity well you might retire before you're 30 by relying on just your investment. Get as much Bitcoin as you can now, don't get distracted. The Alts aren't at their best now. Probably in future better alternative coins will be introduced but now it's just the hype and hunger for fame/been the next Bitcoin that's why most of the altcoins were created.

It would had been easier if you indicated your capital then maybe some of us can give you an idea from experience on how to go about dollar cost averaging your investment. The next two years will be one of the best times to get as much Bitcoin as you can because after the next halving the astonishing gains there's to come to the industry will be so much that it could skyrocket the price to the million mark speculation that have been spreading around of recent.