15 yards difference between PWs is the biggest difference, IMO, you'd be affecting the wedge setup unless you commit to a HB and just 2 wedges. Not good advice.
5.0 precision is nice but with that meter speed it's a trade-off. Hit the ding if you want that precision otherwise the forgiveness is no different. You can make Legend easily with the 59s, a 3w and 3 good wedges. With the 45s you'd have to compromise, pay an extra 400 credits for them AND outgrow them sooner.