The 3016HST will do as well as a 3616HST in many conditions, like loader work and backhoe work. But dragging a log up a hill with an HST is something that will show you that the 3016 could use a few more HP, especially with loaded tires (which I recommend). I'd consider more HP for your application. Generally a 3616HST is $2500-$2700 more than the 3016HST. If it is $4000 more, consider the new 1533HST instead as it will be nearly the same price and is a heavier tractor with a large displacement 4-cylinder with a ton of torque.
Sysop, when you put a backhoe on a 3016/3616, it does not use the factory remote like some of the other models. Just FYI.
To the OP, putting a remote on takes some time, but it's not rocket science. If you like to tinker, do it yourself. That is assuming you like to turn wrenches.