US - Rome - Florence- Milan - will 11 days be enough?

Summer 2026

2 adults, 2 kids under 11.

Will these times be enough?

Rome - 5 nights (all touristy sites) (land)

Florence - 3 nights (2 day trips to Pisa, Luca, chianti/siena)

Milan - 2 nights (stay in city and fly out)

Pricing from west coast USA:

Flights - $7k (all economy)

Hotels - $12k

Other spend - $5k

Total: $25k approx!

I am unable to do things cheaper!