If I can suggest check out Efficiency MB & Canada Green Homes Grant and add some insulation while your doing the siding. I did that a few years back with both spray in cellulose and xps outside the walls. If your stripping the old siding down to the shiplap, now is the perfect time to do it :) for the insulation I used WarmHome. I don’t have a contractor recommendation for you for siding because I did the vinyl siding myself (with friends). Not hard to do, but time consuming (especially when you don’t realize if you nail nails up or down instead of straight on, it changes the line of the siding and then comes out all goopy and have to pull it back off and start again)