I was looking into the Terracamper tailgate holder, but the $600 euro delivery i got from them was a bit too much.

I decided on the oversized Seikel spare wheel carrier, and i believe a Fiamma bike holder should be able to carry a set of maxtrak and a Thule rubbish bin, and also allow the use of the rear view camera,

I don't think a bike holder would be strong enough for a rim and tire.. there is a fair bit of weight, it all depends on if the top of the frame can be reinforced and if the lower mounts are strong enough for the extra moment load on them

Another idea, i though of at the time is using a Thule 126cm ladder and modifying it.

Thule Van Ladder 126cm - Motorhome Ladders - Motorhome Gear Riversway Leisure

At $300ish its cheaper than a fiamma bike rack, and you also could use it to clean the solar panels.

Im still considering it as a maxtrak and thule bag mount, i'm currently doing welding at TAFE part time and want to see how if i'm any good at TIG welding before i decide on either option.

Welding on a small hinged frame for the Maxtrak and Thule bag and still being able to use the ladder would be great option to have.

As Sunny pointed out, the gas struts may need to be replaced with a larger capacity unit, they are around.