Pneu
You'd be surprised how much a pump will help with sensitivity to insulin issues...
Sensitivity to insulin is my main problem, with being able not only to have 0.1 as a minimum bolus, but also having the ability to deliver a dose of insulin in a very controlled way over a period of time makes things a lot easier..
I do have basal issues that compounded the insulin sensitivity..
I have quite a peak and trough to my basal wave, and background insulin can only do so much, so I had to aware where about on a wave I was, was I going up a peak or down into a trough adjusting dose accordantly.. To had to this little lot, I have Dawn Pham, so over an hour I could see my BG rocket up wards. The pump has sorted this all out for me, flattening my basal profile to a nice flat even profile..
So yes some high end daily management used to go into keeping control, for me the pump is so much easier and I've never found the work load even setting it up hard work or difficult..
Personally concerning CGM's I would say, see how you get on with the pump first...
It's something I used to consider as an option, but when had a serious look into it, I found that in truth for me, I couldn't actually justify the cost, as the main benefit for me, would be overnight basal testing, but if they ever come down enough in price then might think again about them..