Looking for a VPS - the right way

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Hello forum, i'm currently using a human managed server, that i always monitor. So i want to look for a VPS solution that will fit my needs.
First of all it will be running 5 websites, 3 with some traffic and 2 of them almost dead.
When i say traffic, i'm talking about a maximum of 300 users browsing some picture galleries (max 150k each picture) on 3 of the websites.
The rest are static HTML pages, noone will manage them.
Question is, do you think that a 2 core processor, 3gb ram, 100 GB SSD will be enough?
What are your views on Exmasters.com VPS solutions? Can I trust them? Any feedbacks?
Thank you!