I'm a big fan of snow blowers, but it very much depends on your situation. They remove snow more slowly than a plow, but they do a better job and they really get the snow out of the way rather than just creating huge piles that fall back into the space you are trying to clear.
A couple of years ago I went through the same thing you are, wanting to switch from a rear pto blower to a front mounted blower. The rear blower was fine when I was younger, but now I want to comfort of facing forward most of the time.
A snow blower needs a lot of power. It's by far the most straining implement I have, with the engine always struggling to maintain RPM. And a hydraulic powered unit will add a bit more to that because of power losses in the hydraulics.
As a rule of thumb, the hp available in hydraulics is 1hp for every 1 gpm @ 1500 psi. Double the gpm and you double the hp. Double the pressure, and you double the hp. I'll guess that your 16 gpm front port is 1500 psi, so can only deliver 16 hp. Maybe a bit more if it's 2000 psi. That's not nearly enough. You want to tap every horse the tractor has, and the only way to do that is off the rear PTO.
I rejected the idea of a frame and drive line. These couple to the PTO, then have a gear box that connects to a shaft that runs forward to the blower mount, then another gearbox or joint for a final shaft to the blower. They get the power to the blower with minimal loss, but the frames a big and heavy, and now quick to install or remove. And the frames I have seen have to be removed if you want to use your loader. That was all very unappealing to me.
Instead I went with a hydraulic unit nearly identical to grsthegreat. It's an Erskine 84" blower with their HP25 25 gpm hydraulic power pack that is PTO driven. I bought mine used for about $6500 which is around half what they are new - maybe even a bit less. But it turned out to have a blown pump, so I had to get a new pump, and clean all the crap out of the tank. But after that it worked great. I also added the optional cooling fan after finding the parts on Surplus House or something like that. All in it was about $8000, so still not bad.
I love it, but there have been a few learnings.
This was discussed elsewhere here on TBN, but for me the cooling fan was essential. When worked hard, and mine works really hard, the hydraulic oil heats up. With the cooling system is stays at a perfect temp. Snow clearing for me is about 1 to 1.5 hrs. If it will take you a lot less time, then the system may not have time to get hot, but keep an eye on it.
The 84" unit is a touch too big for my 57 hp PTO, and in heavy or deep snow, I am moving VERY slow. First pass is the worst because it's truly 84" wide, and subsequent passes are faster because they are not a full swath. 70 hp would be a beautiful thing with this size blower.
The whole unit is steering-challenged. Front tire chains would help a lot, but I have gotten pretty good at brake steering, and also knowing when to stop, back up, and realign. I no longer think I'll both with front chains.
I don't know if it's standard or optional, but mine has power chute rotation and deflection which is essential for me to be able to direct snow where I want it.
Plan on running at max rpm all the time. There is a big difference is how far the snow gets thrown.
Erskine makes good products, and I highly recommend.