So until my 8 gallon electric BK is ready, I'm using a smaller 5 gallon and BIAB. This weekend I'm brewing my first hefe, which also marks my first use of pilsner malt. Now, with a 60 minute boil, I know I'll be right to the rim of my kettle at mashout, meaning I'll be about 2.5 quarts low for my Total Kettle Volume on a 90 minute boil. Now, I understand the theory behind boiling pilsner for 90 minutes is to drive off DMS precursors, but which of the following options is the lesser of the evils?
1) Start with my "60 minute" boil volume, add the remaining 2.5q near the end of the 60m boil, and then boil for another 30 minutes, or
2) Take my chances with a 60 minute boil and no "top off"
Any opinions? Thanks everyone!