Installing Issues – How can I build a website which constitutes of buddypress's social media, e-commerce, e-learning, blog?

Hi, This is what I have in mind for the website. Basically for the internal side, it will look more or less like twitter which allow longer content length and to put in photos and videos without necessarily having to link to external site(like the facebook profile page). So sort of twitter for activity page and something similar to facebook for profile page. with extra features.
1. forums for discussions
2. e-learning based on topics => this could be like a forum with special side bar for teacher and student to interact.
3. file on each member profile page for saving PDF, Words, Video, Photo which will be open to public.
4. public groups page
5. Each member will be given credit rating for accountability On the other hand for external side which will be shown to public, we will have 1.
Gallery for showing art works (still and moving image) and texts (research) This will be presented in curated manner.
2. Shop for selling art work, which can be searched based on types or regions.
3. About, contact, donation etc.
I have downloaded BuddyPress, BbPress, WooCommerce etc. and so far still struggling to install the basic community demo. None of these features has shown up in the main site yet. I was also informed by a friend that if I include all the features I wanted in one site, there might be many subsequent bug problems. Is this true? Best, N