I've saved up $3000 to open a Roth IRA with Vanguard (target retirement fund 2045 - VTIVX). $3000 is the minimum to open an account, and the low/no fees appeal to me. I am 28 years old, so this is a long-term investment, and I plan to dollar-cost average into the account every month after my initial $3000 investment.

With the markets doing horribly, I will likely see an immediate loss on my initial $3000 investment. Would I be better to keep adding to my $3000 in savings (making about 3% interest) and then open the Roth IRA later this year (or whenever the markets calm down)? Or should I just open the account now with my $3000 initial investment and dollar-cost average into the account over the next few months to max it out, and not look back?

Methinks I should take advantage of the low prices now since this is a long-term investment, but this is my first foray into investing for retirement, and would like some feedback.