Just a small correction on a previous post. If you are using a Vanguard S&S ISA you aren't charged to withdraw your money from Vanguard.
With regards to things like insurances - remember that your need for these will be mitigated by your DH's Public Service job - generous sick leave coverage, and death in service payment. Doesn't mean you don't need them but it may reduce the levels you consider you need.
It might be more helpful to consider your savings pots separately
Short term - what you put away for holidays and Christmas
This should be easy access and calculated based on your experience of your spending habits/expectations. You can still get reasonable interest at the moment, but remember becasue of your salary, only the first £500 will be nil rated for tax.
Medium/emergency - the money you would use to help cover job loss or a large household expense not covered by insurance (new boiler is the usual e.g).
This should also be cash, but once you have reached the amount you feel you need, don't add to it unless that calculation changes. If locking it away in a restricted access account helps, do that. Because it's likely to be a larger sum, you might consider a cash ISA for this.
Long term - This will be the pot that will give you options if you want to retire early, drop hours at work, what ever your long term goals are. The S&S ISA is the best place for this. £100 is a nice start, but once your other pots are full, consider diverting more into this.
Your daughter is young so S&S ISA is probably also best for her. Do remember though that once she is 18 you have no control over that money. Build her a nice sum, but prioritise your own savings and financial security - you can always gift her sums, but when you think she is ready.
Pensions - your DHs pension will be good, but possibly lack flexibility for early retirement. At some point he may want to think about a SIPP.
You say you put 7% in your pension, is that just you or your combined employee/employer contribution? If the latter, even on your salary that may not keep you in the manner you would like. When you feel you can I would begin to raise that percentage, it's also incredibly tax efficient. Check if your employer matches if your put in more.
Hope that helps.