What would you pace with these stats?

First time poster long time lurker. I’m running the LA marathon as my first next month and am still trying to decide my race day pace. Based on the following info what would you pace at?

31M Avg mpw - 40 Peak mileage - 45 Longest run - 20 x2 (coming up over the next 3 weeks) HM - 8/10 effort with tired legs - 1:53

Todays easy run was 8 miles @ 10:29 with 152 avg hear rate. My 18 miler was 10:41 @ 158 average heart rate.

Any guidance would be appreciated!!