Best paved passage from La Paz through Peru to Ecuador

[2wheelsinmotion]

Hi All,

My wife and I are on our 2015 GSA and will be travelling from La Paz, through Peru to Ecuador. Ideally we didnt wan to travel up on the Pan American as 4/5 months later we will be travelling back down it to join up with the Dakar in Peru..... this is of course the ideal outcome.
I have tried to plan Routes through Base Camp and while it appears fine I get the impression that there are many sections of un paved roads. I know its all part of the journey but my wife isnt keen going through sand/ gravel etc as we've come off a few times so ideally i'm trying to find paved roads.

Ive looked at the Ruta 003 but not sure if this is fully sealed or not.

Any assistance or advice would be appreciated

Thanks David