It was windows like those that helped "encourage" me into WFP.
The one above the bay needs the ladder extended to rest on the brickwork above the window - to reduce the angle. For pity's sake, have ladder mitts on the end of the ladder to reduce the risk of sideways slip. The lower half of that wndow might be tricky as it's a longer distance to reach in. I have even been known to do windows like that with a foot on the sill and the other on the ladder. DON'T DO THAT!
Even if full WFP is currently unaffordable, at least treat yourself to a backpack, a cheap poleand find a local window cleaner who will supply you with enough water just to do the difficult windows.
Backpack maybe £100 with the VAT. You should be able to pick up a 20 foot fibreglass pole with brush for another £100 or so. The pole will not be great for that kind of price but if you only want it for the odd window, that won't matter. A couple hundred quid or so to spare you from the possibility of serious injury or untimely death.