2 adults and 2 children (u18) in Florence Th and F July 23/24. Being realistic about how much we can see/do and willing to pay a bit extra so that we don't spend any time in a queue.

Thinking of (not in any order):
Giotto's Bell tower
Uffizi Galleries
Piazzale Michelangelo
Piazza della Signoria (square with copy of David)
Basilica di Santa Croce
Palazzo Vecchio (and Fountain of Neptune)
Ponte Vecchio
Stibbert Museum
Museo di Storia della Scienza in Piazza dei Giudic

Is this realistic or is there too much? If so, is there something on here that is further away from the rest/something that stands out as being something we should miss?

Given the above list and dates, what would be the best type of tickets to get to avoid queues/save money?
I think the firenze card probably doesn't make sense for us but not sure....

Thanks in advance for your help.