It's possible with available tech (and some folks around here have done it) but it's a bit specialist so I think I'm right in saying it's only been done by commited self build enthusiasts not converters.
While possible it is going to hit your wallet hard and your storage space. Do the numbers for your heating and cooking and you'll realise very quickly just how much energy those use that you don't really see when on the grid, and that turns into significant amounts of battery capacity.
I think you'd be lucky to reliably make a week with everything being driven by battery - though more likely in the sunny months especially if you can deploy something like a folding 200w solar panel in addition to a fixed one.
Not being funny but you certainly won't if you are not forking out for decent panels - you'll have a high demand and a small roof so you want decent stuff up there - even if the Anker branded ones are not the right ones.
As for the portable power packs they are probably better charged from additional panels (if you want to boost your solar on suitable days) or topped up via a hard wire feed into the solar charger from your leisure battery (if you want to use excess solar from the fixed panels). Chopping and changing the wiring for the fixed panels isn't ideal for the wear on the connectors or the confusion on the MPPT chargers. If you use the Victron MPPT chargers a potential neat way of dealing with this is to have the power pack charger from the load terminals and configure those to turn on when there is excess solar.
