Yesterday I did some calculations with the help of the IRS withholding calculator and an online Paycheck calculator. I realized if I increase my HSA contribution to max it out for the year, and adjust my withholdings due to the lessened tax, that my checks would only be about $100 smaller.
I am now contributing the max to 401K, Roth IRA and HSA for 2015.
My savings rate is now 74%. Working hard to get to 75%!