Opening a roth IRA ?s

[johndenver]

Background: Am 23, had real world job for 1 year, am 1 paycheck away from having 6 months living expenses cash on hand ( 10K )

My next goal is to fully fund a roth 401K before april ( cause thats when the deadline is I believe).

I am thinking of opening it through my bank, bank of america, is this normal?

What mutual fund should I put it in, for 4K I believe its better to be in just one fund.

Is it better to save 4K and then put the whole lump sum in at once before the deadline, or can I make monthly X$ contributions without getting killed on transaction fees? do mutual funds even have transaction fees?

Thanks