If you have not checked the weight on your RV, it would be a great time to fill the water tank 1/2 full, and take it to a moving company or a scale at a truck stop, or another truck scale.
Then it depends on the results of your weight. If you can collect side to side weight, then you can figure out if one of your front tires or back might be overloaded.
What I did was pull onto the scale with just the front right tire, look at the weight, write it down, then pull on with both front tires (you might need to back up). Then I was able to get the right side only, and then the whole RV. From that, I was able to subtract the right front tire from both the front axle and right side weights, giving me the right rear and left front tire weights. With the overall weight, I was able to subtract all three tires, and get the left rear tire weight.
So if you have a lot of rear axle capacity, but not much on the front axle, then placing the weight behind the rear axle will take some weight off the front axle, and put more on the rear one. You really can't put the large object into the living room (or risk it flying in the event of a accident) but the forward storage compartments might be able to handle about 100 pounds each, or if they are pass through and above the frame, then several hundred pounds can go into them. Yes it really matters what the storage compartment is made of when loading up 100# or more. Mine are sheet metal, and while it 'might' be good for 100 pounds for a while, it is not good for 100 pounds for 3-4 years, and when I installed a pair of 70 pound batteries, I put some steel under the batteries, from the outer sidewall to the RV frame, to properly support the loads, even in a pot hole, that can jar the RV, and put many G's on the RV for a fraction of a second.
Or you can skip all these steps, and put the load in the toad. That is what I did when going back to Chicago to deliver a 3 ton capacity (190 pound) air conditioner for a friend. I have a braking system on the toad, and it will stop itself just fine.
When I was towing my brother's trailer, with a 700 - 800 pound hitch weight, I was careful to not fill my fresh water tank. In my motorhome, the fresh tank is just in front of the rear bumper. Not filling it means the front axle can be right at it's maximum capacity, while filling it with 100 gallons (800 pounds) of water will put more weight on the rear axle, and transfer some weight off the front axle. Due to my 3042 pound rated front tires, this is a requirement for my RV.
Good luck,
Fred.