That you had a pup puts you in a better position than most as far as carrying weight goes. IF like us you had everything you needed in the pup. You can put it in the TT and add very little to the ready to camp weight.
With the pup EVERYTHING we had / have is light weight, and compact. It had to be. Not a lot of carrying Capacity in a pup. Carry the same stuff, and you will be golden. Think about it. If you didn't need it with the pup, You don't need it now. Only thing more you will need in the TT is a sewer hose, and a couple more leveling blocks. In fact you may need LESS stuff. Like a cooler. We no longer carry a big cooler. With the fridge, it is not needed.
When I weighed my TT loaded ready to camp. I found we had actually added 550lb of weight to the dry weight, and we had ALL our camping gear with in the TT. It weighs LESS now. A lot of the things we used in the pup, we no longer need, and we took that stuff out.