Re: BSF and staff laptops?
It shouldn't make any difference.
Hopefully, the LEP / LA / School, should be able to state whether they want existing laptops to be support or not.
They should also be able to state whether they want laptops provided for all (relevant) staff.
I would also hope the new BSF scheme would replace laptops at the same rate, but I guess it will come down to how good the schools/LA BSF co-ordinators are.
You should really have someone at the school who will be responsible for the BSF process, and it would be best to give them a list of all the issues that you can raise.