I am really glad for you guys getting to a new stage. The only problem I see - your pricing model seems too greedy. Did you really look at your costs and comparable hosting prices? Did you estimate how different plans can leverage each other? You are more than great for free account, but - anything else lead to looking around for less expensive solutions. Suggestion: look at existing [stable] rails (and non-rails) hosting providers/resellers, and match their offerings. In this case you will retain most of your customer base.