Ultimately, go ahead and put whatever you bloody well please on what ever truck you feel like putting it on.
If it's too heavy to move you'll never get out of the driveway, so problem solved there.
If it's so heavy that it scares you to drive it you'll turn around and go home before you get too far, so problem solved there.
If it's tolerable it'll be safe enough, but you'll get sick of it sooner or later and upgrade trucks like you should have in the first place, so problem solved there.
If you feel there's nothing wrong with your rig, hit the road and have fun!