The HG700 is designed to be used with a spacer when installed on an 11 speed freehub. My guess is that you’ll probably still need some derailleur adjustment or playing with small spacers if you use the R7000 cassette. If you have a caliper and measure from the small cog to the dropout when on the trainer and compare the measurement to how it sits when the rear wheel is installed, that can help you understand how much difference exists.