Moving from Wendler’s 531 Triumvirate to 2x2x2?

[Augustus59]

Good afternoon. I am 65 and have been doing Jim Wendler’s 531 Triumvirate during the fall and winter on Monday, Tuesday, Thursday, Friday. Each day is followed 2.5 mile walk and stretching and mobility. Saturday was dedicated to HIIT on the Airdyne.
This spring and summer I thought I would try his 2x2x2 program and focus on conditioning. Walking each day will stay the same.
Thoughts or suggestions?

Monday
Squat – 3 x 5 Pros
Bench – 3 x 5 Pros

Assistance Exercises:
Circuit
Pulldowns – 3 sets of 12 reps
DB RDLs – 3 sets of 10 reps
Dumbbell Press – 3 sets of 10 reps
Crunch – 3 sets of 12 reps
Super set
Chest Supported Rows – 3 sets of 10 reps
Triceps Rope Press Down – 3 sets of 10 reps

Tuesday: HIIT – Airdyne -20 minutes

Wednesday: Mobility/Flexibility- 45 minutes

Thursday:
Deadlift – 3 x 5 Pros
Press – 3 x 5 Pros

Assistance Exercises:
Circuit
Inverted Rows – 3 sets of 10 reps
Goblet Squat – 3 sets of 10 reps
Push-ups – 3 sets of 10 reps
Hanging Leg Raise – 3 sets of 10 reps
Super set
Face-Pulls- 3 sets of 10 reps
DB Curls – 3 sets of 10 reps

Friday: HIIT – Airdyne -20 minutes

Saturday: Mobility/Flexibility- 45 minutes