buying xenforo, few questions before purchase


hey i want to buy xenforo but have a few questions first.

i plan to use this forum for my minecraft server players to chat on mainly. its a small server so like 5 active forum members.

i am new to forum/web hosting.

is the shared "tiny" hosting package enough for what i need?
how many posts can i get on my forum with that plan?
are they a good host? any other host recommendations?

also i want to set up my forum locally first on mamp, im on mac, is there a guide for setting it up with mamp, thanks !!

also if i buy one of the themes , am i allowed to edit the skin?


im on step 3 of installation and i get this error Fatal error: Maximum execution time of 120 seconds exceeded in /Applications/MAMP/htdocs/community/library/Zend/Validate/Hostname.php on line 591

the part where i got to make admin account , just keeps loading and error pops up

edit. ill try to reinstall