It is possible to max out both my 401k and Roth IRA

I did some calculations over several possible scenarios. If I get a very significant increase in pay, I could max out both retirement funds. Otherwise, it would have to be one or the other. My choice would be the Roth.

Even if I got that significant increase and maxed both options, I'd still struggle to meet my after-tax saving goals. So chances are even if I that big increase, I would only max my Roth and use the extra after-tax money to save for other goals while funding my 401k at 15% to 20% of my pre-tax income, which I think is pretty good in and of itself.