It depends on your purpose if you want low page website or many page website. Sometimes, having a many-page website is a bad idea. If you have 1 keyword, or 2 keywords you want to rank for and you prepare a good 1, 2 or 3 page website that focuses on those keywords, then you build backlinks with targeted anchor text, that is far superior if you have 1 or 2 keywords you're interested in. If you want to rank for just about any terms under the sun, you're running google ads and want your site to rank for the maximum possible combination of keywords imaginable, then a large website with many pages is what you want. The difference is how you spread your pagerank around, if you have good incoming links and only 3 pages have to share all that PR, those 3 pages will do extremely well. If you have 1000 different pages with nonsense information (like databased census info or some other type of data that is duplicate content from already being on hundreds of websites), or other pages that may rank for some odd phrases that only your page contains ... thats the worst thing you could do if you only want to rank for a few chosen keywords. Suddenly your higher PR 3 pages become lower PR as that PR is leaked to all your nonsense pages with database info you don't care if you get search traffic from. I currently have top ranking pages for keywords I want to rank on for websites that are 1, 2 or 3 ... and in some cases only 12 pages. Every one of my pages are sculpted to rank for a particular keyword. So it depends on your purpose ... if you're living off adsense and want as many viewers as possible no matter what they're interested in, go for a large site. If you have specific targeted keywords you want to rank for, and these keywords are specialized, in my opinion you're better off with a low-page website.
Content Is The King and Google like site with unique content So more pages more content and more likeness ... it is just a simple case i think
Submitting your site to google is not necessary . Obviously google wants content therefore a single page web site will not be taken seriously
9 days ago I registered a domain and chucked a single page up stating the services that I would be offering and the locations I would be targeting. The page got crawled within 24 hours with just 2 links pointing to it, and was in the SERPs within 32 hours getting referrals. The content has now been developed, but it goes to show that one page can get indexed and pass traffic within a few days.