Naa, that's not too excessive at all. It sounds as if you have every base covered, so all you need to do is keep at it, build your company rep and it should be ok from then on. I'm just not sure about whether or not you need to go on with adwords. That you need to decide. You came back a bit after stopping it, so you could do it again and improve on it. It's entirely up to you.
You have to know where the website is currently ranking and for what keywords as well as what keywords are driving traffic to the website.
Because a keyword could've dropped and then when you remove the traffic from Google along with the keyword dropping you feel a heavy hit. Then when you put the PPC back it comes back but not to the same level as it was before because you have lost some organic traffic.