Depends on how long btwn intervals. If you’re prepping for a 4 lap road race you might have 20 minutes or more btwn climbs and so you’d build a workout with appropriately generous recoveries.
If you’re talking about 4 × 8 with 4 minute recoveries then, agreed, 110% is gonna be very tough. 
In that case probably best to build up from 4 × 6, 4 × 7 and 3 × 8 going as hard as possible while maintaining power across all the intervals.