The person ultimately responsible for the success of your company is yourself and most likely you'll fail regardless of VCs.

I take issues with some of the second order effects:

1. "Because your goal is to sell the company later, it has to grow."

You don't have to hire just because you take VC money. You should hire at the right rate.

2. "You’ll be spending much of your time on finding the next investors".

If you manage your burn properly you wouldn't have to and you should aim to be default alive. http://www.paulgraham.com/aord.html

3. "You have to focus on large markets with many (or large) customers"

Yes you shouldn't take VC money if you don't want to go big eventually.

4. "Making existing customers happy is less important than acquiring many more new customers"

You have to do both and the goal should be to make existing customers so happy that tell others which will drive growth. If you don't make a product people love you won't win in the long run anyways.

Finally I think a common mistakes for Founders is making their VC's their boss. Although I agree with some of the sentiment of there is some perverse incentives with VCs as a founder you should take ownership of the decisions that impact your company.