Selfhosted

Hey, so I recently had the idea of proposing some new ideas, I had for the IT infrastructure of my local scouts organisation, mainly it's own nextcloud instance and website (and if that works well, maybey a matrix server and wiki, but website and nextcloud are much higher priority right now). But, I am wondering, what the best way to do the hosting would be. Using a VPS would be pretty nice, because there would be no upfront cost, but we would have to pay monthly fee and that's pretty hard to pitch for a new and untested idea, especially because we don't have that much regular funds/income. The other option would be to self host on hardware that stays in the building, but I am not quite shure, but then we would have a pretty steep upfront cost and I am not 100 percent shure, if we even have a proper network in the building.

The main thing, I am trying to ask here is, if any of you have ever done something similar before and if so, how you did it. Also I am thankful for any advice in general. I have done this already for my family, but doing this for an entire organistation is an entirely different thing. Thank you very much in advance!