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Originally Posted by
Jason B
Don't worry about using the "highest weight possible." This will not only be almost impossible to determine, but it will limit how long you can go until you stall out. Personally, I'd start with about 85% of what you're doing with 3x5. So if you get up to 350 on linear progression, start your 5x5 with 300. Keep in mind, not only are you doing 2 extra sets (~2000lbs more total tonnage), but you'll be doing the heavy day on Friday, give your body a chance to adjust. Don't be afraid to start on the light side and embrace fast improvement.