Using KeystoneJS for clients' websites

Hi!

Background information: I have spent the last 6 months intensely learning web design and development (average 10 hours a day 7 days a week) through treehouse and youtube videos. I am starting an online marketing (website production mainly) company next month and I aware that I will make a boat load of mistakes due to the lack of real life experience but I am going to do it anyway because I can not stand working for other people anymore. My target market is the 12,000 SMBs that start in my city every year. Do you guys think that using Keystone would be appropriate for small to medium clients? So far I see it like this:

Benefits

• Integrates right in to node workflow -> more efficient

• Provides more value to the customers through CMS

• Client 'Lock-in' to a certain extent, due to the fact that no company is offering node apps in my area. Thus if they want to change providers, it would cost them more (at least initially, until other companies start to offer it)

• Great documentation

• It's fast thanks to node.js... right?

Concerns

• It's fast thanks to node.js... right?

• Still a young framework

• Community is no way near as extensive other frameworks' such as WordPress

• Security?

• Is this overkill for near-static websites?

• Would a virtually unknown CMS scare off clients in your opinion?

• An other things I haven't though of?