I would like to point out that there is more forum software out there, however. The only other viable option is Simple Machines, which I actually prefer. (There are a variety of reasons, for example add-ons are a breeze, whereas with phpBB you have to manually install them.... but I won't get into them here.).... if you use a bit of shell, you can actually get a forum you upload yourself running faster than one done by the 1-Click Installer.
For webhosting, you should be fine on your regular, $10 / month account until you get many many members.
There's only one hosting plan, which gives you 500 gb of hosting space and 5 tb of bandwidth. I figure $10 / month, because that's what it is paying on a yearly basis, but if you pay in advance you can get it for as low as $6 / month. Not to mention the $50 off you can get from a variety of promo codes.
Good luck with your new site!
SFT_DOM_IP_50 - one EXTRA lifetime domains, 1 lifetime unique ip, $50 off
Also try, SFT_3DOM_50; SFT_DOM_STUFF
Want a custom promo code? PM me