You can do everything that a bigger tractor and implements can do. You just have to have the right sized (smaller) attachments, and maybe take smaller bites as you go.
You can absolutely clear snow with a FEL and bucket on the front and a box blade on the 3 pt. I've been doing it that way for years. It is slower, but it does work, it just takes many more passes because you can't windrow off to one side. It also makes it more difficult in a big snow winter because you can run out of places to pile the snow. I think eventually I will have a 3pt snow blower and a front blade on the FEL for my "final" snow equipment. The blower is my next attachment purchase, hopefully this fall. We had such a mild winter this last one, that it became less of a priority to SWMBO, so we bought a sectional couch instead (lol). After the blower, I think a 3rd function for the FEL and either a grapple or a front blade will be next.
If you're staying with 25 pto hp, just bear in mind the snow blower and (if) wood chipper will probably have to be on the small side so the tractor's engine can keep up with the demand. I'd still go hydro on the transmission, which will make it easier to control your ground speed when you get into bigger snow piles. You'll still want a blower wide enough to cover your rear tire track, but I'm thinking 5' blower is the most you're going to want, and plan on slowing down when it's wet and heavy snow. Most of the time up here our snow is pretty dry, just because of the colder air temps.
Thanks for all the help and input, definitely appreciated. I’m thinking I might hold off on a snow removal attachment for this winter to try it with the FEL and go from there. If I can get away with a 4’ or 5’ attachment down the road I think that’ll be fine for me and if I need to do an extra pass then so be it. I enjoy working in the woods but come winter I might not be saying that when it’s freezing out lol