Progressive wing of the Dem Party won't get all they wanted, but that's how negotiations are expected to go...come in high, then settle for something 'acceptable'. As for the funding, it depends on the price and the palatable means...e.g. increased taxes on corps and the very wealthy...(but nowhere near the tax rates of the Eisenhower years). In my view, so long as the CBO is cool with it, I'm good...remember, this deal is for ten years, not one.
BTW, for what it's worth, a significant majority of the American public really likes those programs...just saying.
Link: https://www.politico.com/newsletters/playbook/2021/10/20/breaking-down-bidens-latest-build-back-better-plan-494779