I actually hope that we stay flat like this for several more years, because each week my dad gives me $10 allowance and I like to put half of that toward bitcoin. In 4 more years, I can have 2 full bitcoin!
If the price manages to go up and maybe even another bubbles comes around, your $10 May quickly be worth $10k, haha! But your plan seems like a reasonable and prudent plan. But remember that Bitcoin may still go to $0!